neulab/tldr huggingface dataset:
-m, --multi Set gdb server to extended mode.  st-util will continue listening for connections after disconnect.
-n, --no-reset Do not reset board on connection.
--semihosting Enable ARM Semihosting output on stdout
Run GDB server on port 4500 and connect to it
$ st-util -p 4500 $ gdb (gdb) target extended-remote localhost:4500
st-flash(1), st-info(1)
PS(1)                             User Commands                            PS(1)
ps - report a snapshot of the current processes.
ps [options]
ps displays information about a selection of the active processes.  If you want a repetitive update of the selection and the displayed information, use top instead.
This version of ps accepts several kinds of options:
1   UNIX options, which may be grouped and must be preceded by a dash. 2   BSD options, which may be grouped and must not be used with a dash. 3   GNU long options, which are preceded by two dashes.
Options of different types may be freely mixed, but conflicts can appear. There are some synonymous options, which are functionally identical, due to the many standards and ps implementations that this ps is compatible with.
Note that ps -aux is distinct from ps aux.  The POSIX and UNIX standards require that ps -aux print all processes owned by a user named x, as well as printing all processes that would be selected by the -a option.  If the user named x does not exist, this ps may interpret the command as ps aux instead and print a warning.  This behavior is intended to aid in transitioning old scripts and habits.  It is fragile, subject to change, and thus should not be relied upon.
By default, ps selects all processes with the same effective user ID (euid=EUID) as the current user and associated with the same terminal as the invoker.  It displays the process ID (pid=PID), the terminal associated with the process (tname=TTY), the cumulated CPU time in [DD-]hh:mm:ss format (time=TIME), and the executable name (ucmd=CMD). Output is unsorted by default.
The use of BSD-style options will add process state (stat=STAT) to the default display and show the command args (args=COMMAND) instead of the executable name.  You can override this with the PS_FORMAT environment variable.  The use of BSD-style options will also change the process selection to include processes on other terminals (TTYs) that are owned by you; alternately, this may be described as setting the selection to be the set of all processes filtered to exclude processes owned by other users or not on a terminal.  These effects are not considered when options are described as being "identical" below, so -M will be considered identical to Z and so on.
Except as described below, process selection options are additive.  The default selection is discarded, and then the selected processes are added to the set of processes to be displayed.  A process will thus be shown if it meets any of the given selection criteria.
To see every process on the system using standard syntax: ps -e ps -ef ps -eF ps -ely
To see every process on the system using BSD syntax: ps ax ps axu
To print a process tree: ps -ejH ps axjf
To get info about threads: ps -eLf ps axms
To get security info: ps -eo euser,ruser,suser,fuser,f,comm,label ps axZ ps -eM
To see every process running as root (real & effective ID) in user format: ps -U root -u root u
To see every process with a user-defined format: ps -eo pid,tid,class,rtprio,ni,pri,psr,pcpu,stat,wchan:14,comm ps axo stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm ps -Ao pid,tt,user,fname,tmout,f,wchan
Print only the process IDs of syslogd: ps -C syslogd -o pid=
Print only the name of PID 42: ps -q 42 -o comm=
a      Lift the BSD-style "only yourself" restriction, which is imposed upon the set of all processes when some BSD-style (without "-") options are used or when the ps personality setting is BSD-like. The set of processes selected in this manner is in addition to the set of processes selected by other means.  An alternate description is that this option causes ps to list all processes with a terminal (tty), or to list all processes when used together with the x option.
-A     Select all processes.  Identical to -e.
-a     Select all processes except both session leaders (see getsid(2)) and processes not associated with a terminal.
-d     Select all processes except session leaders.
--deselect Select all processes except those that fulfill the specified conditions (negates the selection).  Identical to -N.
-e     Select all processes.  Identical to -A.
g      Really all, even session leaders.  This flag is obsolete and may be discontinued in a future release.  It is normally implied by the a flag, and is only useful when operating in the sunos4 personality.
-N     Select all processes except those that fulfill the specified conditions (negates the selection).  Identical to --deselect.
T      Select all processes associated with this terminal.  Identical to the t option without any argument.
r      Restrict the selection to only running processes.
x      Lift the BSD-style "must have a tty" restriction, which is imposed upon the set of all processes when some BSD-style (without "-") options are used or when the ps personality setting is BSD-like. The set of processes selected in this manner is in addition to the set of processes selected by other means.  An alternate description is that this option causes ps to list all processes owned by you (same EUID as ps), or to list all processes when used together with the a option.
These options accept a single argument in the form of a blank-separated or comma-separated list.  They can be used multiple times.  For example: ps -p "1 2" -p 3,4
-123   Identical to --pid 123.
123    Identical to --pid 123.
-C cmdlist Select by command name.  This selects the processes whose executable name is given in cmdlist.  NOTE: The command name is not the same as the command line. Previous versions of procps and the kernel truncated this command name to 15 characters. This limitation is no longer present in both. If you depended on matching only 15 characters, you may no longer get a match.
-G grplist Select by real group ID (RGID) or name.  This selects the processes whose real group name or ID is in the grplist list.  The real group ID identifies the group of the user who created the process, see getgid(2).
-g grplist Select by session OR by effective group name.  Selection by session is specified by many standards, but selection by effective group is the logical behavior that several other operating systems use.  This ps will select by session when the list is completely numeric (as sessions are).  Group ID numbers will work only when some group names are also specified.  See the -s and --group options.
--Group grplist Select by real group ID (RGID) or name.  Identical to -G.
--group grplist Select by effective group ID (EGID) or name.  This selects the processes whose effective group name or ID is in grplist.  The effective group ID describes the group whose file access permissions are used by the process (see getegid(2)).  The -g option is often an alternative to --group.
p pidlist Select by process ID.  Identical to -p and --pid.
-p pidlist Select by PID.  This selects the processes whose process ID numbers appear in pidlist.  Identical to p and --pid.
--pid pidlist Select by process ID.  Identical to -p and p.
--ppid pidlist Select by parent process ID.  This selects the processes with a parent process ID in pidlist.  That is, it selects processes that are children of those listed in pidlist.
q pidlist Select by process ID (quick mode).  Identical to -q and --quick-pid.
-q pidlist Select by PID (quick mode).  This selects the processes whose process ID numbers appear in pidlist.  With this option ps reads the necessary info only for the pids listed in the pidlist and doesn't apply additional filtering rules.  The order of pids is unsorted and preserved.  No additional selection options, sorting and forest type listings are allowed in this mode.  Identical to q and --quick-pid.
--quick-pid pidlist Select by process ID (quick mode).  Identical to -q and q.
-s sesslist Select by session ID.  This selects the processes with a session ID specified in sesslist.
--sid sesslist Select by session ID.  Identical to -s.
t ttylist Select by tty.  Nearly identical to -t and --tty, but can also be used with an empty ttylist to indicate the terminal associated with ps.  Using the T option is considered cleaner than using t with an empty ttylist.
-t ttylist Select by tty.  This selects the processes associated with the terminals given in ttylist.  Terminals (ttys, or screens for text output) can be specified in several forms: /dev/ttyS1, ttyS1, S1. A plain "-" may be used to select processes not attached to any terminal.
--tty ttylist Select by terminal.  Identical to -t and t.
U userlist Select by effective user ID (EUID) or name.  This selects the processes whose effective user name or ID is in userlist.  The effective user ID describes the user whose file access permissions are used by the process (see geteuid(2)).  Identical to -u and --user.
-U userlist Select by real user ID (RUID) or name.  It selects the processes whose real user name or ID is in the userlist list.  The real user ID identifies the user who created the process, see getuid(2).
-u userlist Select by effective user ID (EUID) or name.  This selects the processes whose effective user name or ID is in userlist.
The effective user ID describes the user whose file access permissions are used by the process (see geteuid(2)).  Identical to U and --user.
--User userlist Select by real user ID (RUID) or name.  Identical to -U.
--user userlist Select by effective user ID (EUID) or name.  Identical to -u and U.
These options are used to choose the information displayed by ps.  The output may differ by personality.
-c     Show different scheduler information for the -l option.
--context Display security context format (for SELinux).
-f     Do full-format listing.  This option can be combined with many other UNIX-style options to add additional columns.  It also causes the command arguments to be printed.  When used with -L, the NLWP (number of threads) and LWP (thread ID) columns will be added.  See the c option, the format keyword args, and the format keyword comm.
-F     Extra full format.  See the -f option, which -F implies.
--format format user-defined format.  Identical to -o and o.
j      BSD job control format.
-j     Jobs format.
l      Display BSD long format.
-l     Long format.  The -y option is often useful with this.
-M     Add a column of security data.  Identical to Z (for SELinux).
O format is preloaded o (overloaded).  The BSD O option can act like -O (user-defined output format with some common fields predefined) or can be used to specify sort order.  Heuristics are used to determine the behavior of this option.  To ensure that the desired behavior is obtained (sorting or formatting), specify the option in some other way (e.g.  with -O or --sort).  When used as a formatting option, it is identical to -O, with the BSD personality.
-O format Like -o, but preloaded with some default columns.  Identical to -o pid,format,state,tname,time,command or -o pid,format,tname, time,cmd, see -o below.
o format Specify user-defined format.  Identical to -o and --format.
-o format User-defined format.  format is a single argument in the form of a blank-separated or comma-separated list, which offers a way to specify individual output columns.  The recognized keywords are described in the STANDARD FORMAT SPECIFIERS section below. Headers may be renamed (ps -o pid,ruser=RealUser -o comm=Command) as desired.  If all column headers are empty (ps -o pid= -o comm=) then the header line will not be output.  Column width will increase as needed for wide headers; this may be used to widen up columns such as WCHAN (ps -o pid,wchan=WIDE-WCHAN-COLUMN -o comm). Explicit width control (ps opid,wchan:42,cmd) is offered too.  The behavior of ps -o pid=X,comm=Y varies with personality; output may be one column named "X,comm=Y" or two columns named "X" and "Y". Use multiple -o options when in doubt.  Use the PS_FORMAT environment variable to specify a default as desired; DefSysV and DefBSD are macros that may be used to choose the default UNIX or BSD columns.
s      Display signal format.
u      Display user-oriented format.
v      Display virtual memory format.
X      Register format.
-y     Do not show flags; show rss in place of addr.  This option can only be used with -l.
Z      Add a column of security data.  Identical to -M (for SELinux).
c      Show the true command name.  This is derived from the name of the executable file, rather than from the argv value.  Command arguments and any modifications to them are thus not shown.  This option effectively turns the args format keyword into the comm format keyword; it is useful with the -f format option and with the various BSD-style format options, which all normally display the command arguments.  See the -f option, the format keyword args, and the format keyword comm.
--cols n Set screen width.
--columns n Set screen width.
--cumulative Include some dead child process data (as a sum with the parent).
e      Show the environment after the command.
f      ASCII art process hierarchy (forest).
--forest ASCII art process tree.
h      No header.  (or, one header per screen in the BSD personality). The h option is problematic.  Standard BSD ps uses this option to print a header on each page of output, but older Linux ps uses this option to totally disable the header.  This version of ps follows the Linux usage of not printing the header unless the BSD personality has been selected, in which case it prints a header on each page of output.  Regardless of the current personality, you can use the long options --headers and --no-headers to enable printing headers each page or disable headers entirely, respectively.
-H     Show process hierarchy (forest).
--headers Repeat header lines, one per page of output.
k spec Specify sorting order.  Sorting syntax is [+|-]key[,[+|-]key[,...]].  Choose a multi-letter key from the STANDARD FORMAT SPECIFIERS section.  The "+" is optional since default direction is increasing numerical or lexicographic order. Identical to --sort.
Examples: ps jaxkuid,-ppid,+pid ps axk comm o comm,args ps kstart_time -ef
--lines n Set screen height.
n      Numeric output for WCHAN and USER (including all types of UID and GID).
--no-headers Print no header line at all.  --no-heading is an alias for this option.
O order Sorting order (overloaded).  The BSD O option can act like -O (user-defined output format with some common fields predefined) or can be used to specify sort order.  Heuristics are used to determine the behavior of this option.  To ensure that the desired behavior is obtained (sorting or formatting), specify the option in some other way (e.g.  with -O or --sort).
For sorting, obsolete BSD O option syntax is O[+|-]k1[,[+|-]k2[,...]].  It orders the processes listing according to the multilevel sort specified by the sequence of one-letter short keys k1,k2, ... described in the OBSOLETE SORT KEYS section below.  The "+" is currently optional, merely re-iterating the default direction on a key, but may help to distinguish an O sort from an O format.  The "-" reverses direction only on the key it precedes.
--rows n Set screen height.
S      Sum up some information, such as CPU usage, from dead child processes into their parent.  This is useful for examining a system where a parent process repeatedly forks off short-lived children to do work.
--sort spec Specify sorting order.  Sorting syntax is [+|-]key[,[+|-]key[,...]].  Choose a multi-letter key from the STANDARD FORMAT SPECIFIERS section.  The "+" is optional since default direction is increasing numerical or lexicographic order. Identical to k.  For example: ps jax --sort=uid,-ppid,+pid
w      Wide output.  Use this option twice for unlimited width.
-w     Wide output.  Use this option twice for unlimited width.
--width n Set screen width.
H      Show threads as if they were processes.
-L     Show threads, possibly with LWP and NLWP columns.
m      Show threads after processes.
-m     Show threads after processes.
-T     Show threads, possibly with SPID column.
--help section Print a help message.  The section argument can be one of simple, list, output, threads, misc, or all.  The argument can be shortened to one of the underlined letters as in: s|l|o|t|m|a.
--info Print debugging info.
L      List all format specifiers.
V      Print the procps-ng version.
-V     Print the procps-ng version.
--version Print the procps-ng version.
This ps works by reading the virtual files in /proc.  This ps does not need to be setuid kmem or have any privileges to run.  Do not give this ps any special permissions.
CPU usage is currently expressed as the percentage of time spent running during the entire lifetime of a process.  This is not ideal, and it does not conform to the standards that ps otherwise conforms to.  CPU usage is unlikely to add up to exactly 100%.
The SIZE and RSS fields don't count some parts of a process including the page tables, kernel stack, struct thread_info, and struct task_struct. This is usually at least 20 KiB of memory that is always resident.  SIZE is the virtual size of the process (code+data+stack).
Processes marked <defunct> are dead processes (so-called "zombies") that remain because their parent has not destroyed them properly.  These processes will be destroyed by init(8) if the parent process exits.
If the length of the username is greater than the length of the display column, the username will be truncated.  See the -o and -O formatting options to customize length.
Commands options such as ps -aux are not recommended as it is a confusion of two different standards.  According to the POSIX and UNIX standards, the above command asks to display all processes with a TTY (generally the commands users are running) plus all processes owned by a user named x. If that user doesn't exist, then ps will assume you really meant ps aux.
The sum of these values is displayed in the "F" column, which is provided by the flags output specifier:
1    forked but didn't exec 4    used super-user privileges
Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will display to describe the state of a process:
D    uninterruptible sleep (usually IO) I    Idle kernel thread R    running or runnable (on run queue) S    interruptible sleep (waiting for an event to complete) T    stopped by job control signal t    stopped by debugger during the tracing W    paging (not valid since the 2.6.xx kernel) X    dead (should never be seen) Z    defunct ("zombie") process, terminated but not reaped by its parent
For BSD formats and when the stat keyword is used, additional characters may be displayed:
<    high-priority (not nice to other users) N    low-priority (nice to other users) L    has pages locked into memory (for real-time and custom IO) s    is a session leader l    is multi-threaded (using CLONE_THREAD, like NPTL pthreads do) +    is in the foreground process group
These keys are used by the BSD O option (when it is used for sorting). The GNU --sort option doesn't use these keys, but the specifiers described below in the STANDARD FORMAT SPECIFIERS section.  Note that the values used in sorting are the internal values ps uses and not the "cooked" values used in some of the output format fields (e.g.  sorting on tty will sort into device number, not according to the terminal name displayed).  Pipe ps output into the sort(1) command if you want to sort the cooked values.
KEY   LONG         DESCRIPTION c     cmd          simple name of executable C     pcpu         cpu utilization f     flags        flags as in long format F field g     pgrp         process group ID G     tpgid        controlling tty process group ID j     cutime       cumulative user time J     cstime       cumulative system time k     utime        user time m     min_flt      number of minor page faults M     maj_flt      number of major page faults n     cmin_flt     cumulative minor page faults N     cmaj_flt     cumulative major page faults o     session      session ID p     pid          process ID P     ppid         parent process ID r     rss          resident set size R     resident     resident pages s     size         memory size in kilobytes S     share        amount of shared pages t     tty          the device number of the controlling tty T     start_time   time process was started U     uid          user ID number u     user         user name v     vsize        total VM size in KiB y     priority     kernel scheduling priority
This ps supports AIX format descriptors, which work somewhat like the formatting codes of printf(1) and printf(3).  For example, the normal default output can be produced with this: ps -eo "%p %y %x %c".  The NORMAL codes are described in the next section.
CODE   NORMAL   HEADER %C     pcpu     %CPU %G     group    GROUP %P     ppid     PPID %U     user     USER %a     args     COMMAND %c     comm     COMMAND %g     rgroup   RGROUP %n     nice     NI %p     pid      PID %r     pgid     PGID %t     etime    ELAPSED %u     ruser    RUSER %x     time     TIME %y     tty      TTY %z     vsz      VSZ
Here are the different keywords that may be used to control the output format (e.g., with option -o) or to sort the selected processes with the GNU-style --sort option.
For example: ps -eo pid,user,args --sort user
This version of ps tries to recognize most of the keywords used in other implementations of ps.
The following user-defined format specifiers may contain spaces: args, cmd, comm, command, fname, ucmd, ucomm, lstart, bsdstart, start.
Some keywords may not be available for sorting.
CODE        HEADER    DESCRIPTION
%cpu        %CPU      cpu utilization of the process in "##.#" format. Currently, it is the CPU time used divided by the time the process has been running (cputime/realtime ratio), expressed as a percentage.  It will not add up to 100% unless you are lucky.  (alias pcpu).
%mem        %MEM      ratio of the process's resident set size  to the physical memory on the machine, expressed as a percentage.  (alias pmem).
args        COMMAND   command with all its arguments as a string. Modifications to the arguments may be shown.  The output in this column may contain spaces.  A process marked <defunct> is partly dead, waiting to be fully destroyed by its parent.  Sometimes the process args will be unavailable; when this happens, ps will instead print the executable name in brackets.  (alias cmd, command).  See also the comm format keyword, the -f option, and the c option. When specified last, this column will extend to the edge of the display.  If ps can not determine display width, as when output is redirected (piped) into a file or another command, the output width is undefined (it may be 80, unlimited, determined by the TERM variable, and so on).  The COLUMNS environment variable or --cols option may be used to exactly determine the width in this case.  The w or -w option may be also be used to adjust width.
blocked     BLOCKED   mask of the blocked signals, see signal(7). According to the width of the field, a 32 or 64-bit mask in hexadecimal format is displayed.  (alias sig_block, sigmask).
bsdstart    START     time the command started.  If the process was started less than 24 hours ago, the output format is " HH:MM", else it is " Mmm:SS" (where Mmm is the three letters of the month).  See also lstart, start, start_time, and stime.
bsdtime     TIME      accumulated cpu time, user + system.  The display format is usually "MMM:SS", but can be shifted to the right if the process used more than 999 minutes of cpu time.
c           C         processor utilization.  Currently, this is the integer value of the percent usage over the lifetime of the process.  (see %cpu).
caught      CAUGHT    mask of the caught signals, see signal(7). According to the width of the field, a 32 or 64 bits mask in hexadecimal format is displayed. (alias sig_catch, sigcatch).
cgname      CGNAME    display name of control groups to which the process belongs.
cgroup      CGROUP    display control groups to which the process belongs.
class       CLS       scheduling class of the process.  (alias policy, cls).  Field's possible values are:
-   not reported TS  SCHED_OTHER FF  SCHED_FIFO RR  SCHED_RR B   SCHED_BATCH ISO SCHED_ISO IDL SCHED_IDLE DLN SCHED_DEADLINE ?   unknown value
cls         CLS       scheduling class of the process.  (alias policy, cls).  Field's possible values are:
cmd         CMD       see args.  (alias args, command).
comm        COMMAND   command name (only the executable name). Modifications to the command name will not be shown.  A process marked <defunct> is partly dead, waiting to be fully destroyed by its parent.  The output in this column may contain spaces.  (alias ucmd, ucomm).  See also the args format keyword, the -f option, and the c option. When specified last, this column will extend to the edge of the display.  If ps can not determine display width, as when output is redirected (piped) into a file or another command, the output width is undefined (it may be 80, unlimited, determined by the TERM variable, and so on).  The COLUMNS environment variable or --cols option may be used to exactly determine the width in this case.  The w or -w option may be also be used to adjust width.
command     COMMAND   See args.  (alias args, command).
cp          CP        per-mill (tenths of a percent) CPU usage.  (see %cpu).
cputime     TIME      cumulative CPU time, "[DD-]hh:mm:ss" format. (alias time).
cputimes    TIME      cumulative CPU time in seconds (alias times).
drs         DRS       data resident set size, the amount of physical memory devoted to other than executable code.
egid        EGID      effective group ID number of the process as a decimal integer.  (alias gid).
egroup      EGROUP    effective group ID of the process.  This will be the textual group ID, if it can be obtained and the field width permits, or a decimal representation otherwise.  (alias group).
eip         EIP       instruction pointer.
esp         ESP       stack pointer.
etime       ELAPSED   elapsed time since the process was started, in the form [[DD-]hh:]mm:ss.
etimes      ELAPSED   elapsed time since the process was started, in seconds.
euid        EUID      effective user ID (alias uid).
euser       EUSER     effective user name.  This will be the textual user ID, if it can be obtained and the field width permits, or a decimal representation otherwise. The n option can be used to force the decimal representation.  (alias uname, user).
exe         EXE       path to the executable. Useful if path cannot be printed via cmd, comm or args format options.
f           F         flags associated with the process, see the PROCESS FLAGS section.  (alias flag, flags).
fgid        FGID      filesystem access group ID.  (alias fsgid).
fgroup      FGROUP    filesystem access group ID.  This will be the textual group ID, if it can be obtained and the field width permits, or a decimal representation otherwise.  (alias fsgroup).
flag        F         see f.  (alias f, flags).
flags       F         see f.  (alias f, flag).
fname       COMMAND   first 8 bytes of the base name of the process's executable file.  The output in this column may contain spaces.
fuid        FUID      filesystem access user ID.  (alias fsuid).
fuser       FUSER     filesystem access user ID.  This will be the textual user ID, if it can be obtained and the field width permits, or a decimal representation otherwise.
gid         GID       see egid.  (alias egid).
group       GROUP     see egroup.  (alias egroup).
ignored     IGNORED   mask of the ignored signals, see signal(7). According to the width of the field, a 32 or 64 bits mask in hexadecimal format is displayed. (alias sig_ignore, sigignore).
ipcns       IPCNS     Unique inode number describing the namespace the process belongs to.  See namespaces(7).
label       LABEL     security label, most commonly used for SELinux context data.  This is for the Mandatory Access Control ("MAC") found on high-security systems.
lstart      STARTED   time the command started.  See also bsdstart, start, start_time, and stime.
lsession    SESSION   displays the login session identifier of a process, if systemd support has been included.
luid        LUID      displays Login ID associated with a process.
lwp         LWP       light weight process (thread) ID of the dispatchable entity (alias spid, tid).  See tid for additional information.
lxc         LXC       The name of the lxc container within which a task is running.  If a process is not running inside a container, a dash ('-') will be shown.
machine     MACHINE   displays the machine name for processes assigned to VM or container, if systemd support has been included.
maj_flt     MAJFLT    The number of major page faults that have occurred with this process.
min_flt     MINFLT    The number of minor page faults that have occurred with this process.
mntns       MNTNS     Unique inode number describing the namespace the process belongs to.  See namespaces(7).
netns       NETNS     Unique inode number describing the namespace the process belongs to.  See namespaces(7).
ni          NI        nice value.  This ranges from 19 (nicest) to -20 (not nice to others), see nice(1).  (alias nice).
nice        NI        see ni.(alias ni).
nlwp        NLWP      number of lwps (threads) in the process.  (alias thcount).
numa        NUMA      The node associated with the most recently used processor.  A -1 means that NUMA information is unavailable.
nwchan      WCHAN     address of the kernel function where the process is sleeping (use wchan if you want the kernel function name).  Running tasks will display a dash ('-') in this column.
ouid        OWNER     displays the Unix user identifier of the owner of the session of a process, if systemd support has been included.
pcpu        %CPU      see %cpu.  (alias %cpu).
pending     PENDING   mask of the pending signals.  See signal(7). Signals pending on the process are distinct from signals pending on individual threads.  Use the m option or the -m option to see both.  According to the width of the field, a 32 or 64 bits mask in hexadecimal format is displayed.  (alias sig).
pgid        PGID      process group ID or, equivalently, the process ID of the process group leader.  (alias pgrp).
pgrp        PGRP      see pgid.  (alias pgid).
pid         PID       a number representing the process ID (alias tgid).
pidns       PIDNS     Unique inode number describing the namespace the process belongs to.  See namespaces(7).
pmem        %MEM      see %mem.  (alias %mem).
policy      POL       scheduling class of the process.  (alias class, cls).  Possible values are:
ppid        PPID      parent process ID.
pri         PRI       priority of the process.  Higher number means lower priority.
psr         PSR       processor that process is currently assigned to.
rgid        RGID      real group ID.
rgroup      RGROUP    real group name.  This will be the textual group ID, if it can be obtained and the field width permits, or a decimal representation otherwise.
rss         RSS       resident set size, the non-swapped physical memory that a task has used (in kilobytes).  (alias rssize, rsz).
rssize      RSS       see rss.  (alias rss, rsz).
rsz         RSZ       see rss.  (alias rss, rssize).
rtprio      RTPRIO    realtime priority.
ruid        RUID      real user ID.
ruser       RUSER     real user ID.  This will be the textual user ID, if it can be obtained and the field width permits, or a decimal representation otherwise.
s           S         minimal state display (one character).  See section PROCESS STATE CODES for the different values.  See also stat if you want additional information displayed.  (alias state).
sched       SCH       scheduling policy of the process.  The policies SCHED_OTHER (SCHED_NORMAL), SCHED_FIFO, SCHED_RR, SCHED_BATCH, SCHED_ISO, SCHED_IDLE and SCHED_DEADLINE are respectively displayed as 0, 1, 2, 3, 4, 5 and 6.
seat        SEAT      displays the identifier associated with all hardware devices assigned to a specific workplace, if systemd support has been included.
sess        SESS      session ID or, equivalently, the process ID of the session leader.  (alias session, sid).
sgi_p       P         processor that the process is currently executing on.  Displays "*" if the process is not currently running or runnable.
sgid        SGID      saved group ID.  (alias svgid).
sgroup      SGROUP    saved group name.  This will be the textual group ID, if it can be obtained and the field width permits, or a decimal representation otherwise.
sid         SID       see sess.  (alias sess, session).
sig         PENDING   see pending.  (alias pending, sig_pend).
sigcatch    CAUGHT    see caught.  (alias caught, sig_catch).
sigignore   IGNORED   see ignored.  (alias ignored, sig_ignore).
sigmask     BLOCKED   see blocked.  (alias blocked, sig_block).
size        SIZE      approximate amount of swap space that would be required if the process were to dirty all writable pages and then be swapped out.  This number is very rough!
slice       SLICE     displays the slice unit which a process belongs to, if systemd support has been included.
spid        SPID      see lwp.  (alias lwp, tid).
stackp      STACKP    address of the bottom (start) of stack for the process.
start       STARTED   time the command started.  If the process was started less than 24 hours ago, the output format is "HH:MM:SS", else it is "  Mmm dd" (where Mmm is a three-letter month name).  See also lstart, bsdstart, start_time, and stime.
start_time  START     starting time or date of the process.  Only the year will be displayed if the process was not started the same year ps was invoked, or "MmmDD" if it was not started the same day, or "HH:MM" otherwise.  See also bsdstart, start, lstart, and stime.
stat        STAT      multi-character process state.  See section PROCESS STATE CODES for the different values meaning.  See also s and state if you just want the first character displayed.
state       S         see s. (alias s).
stime       STIME     see start_time. (alias start_time).
suid        SUID      saved user ID.  (alias svuid).
supgid      SUPGID    group ids of supplementary groups, if any.  See getgroups(2).
supgrp      SUPGRP    group names of supplementary groups, if any.  See getgroups(2).
suser       SUSER     saved user name.  This will be the textual user ID, if it can be obtained and the field width permits, or a decimal representation otherwise.  (alias svuser).
svgid       SVGID     see sgid.  (alias sgid).
svuid       SVUID     see suid.  (alias suid).
sz          SZ        size in physical pages of the core image of the process.  This includes text, data, and stack space.  Device mappings are currently excluded; this is subject to change.  See vsz and rss.
tgid        TGID      a number representing the thread group to which a task belongs (alias pid).  It is the process ID of the thread group leader.
thcount     THCNT     see nlwp.  (alias nlwp).  number of kernel threads owned by the process.
tid         TID       the unique number representing a dispatchable entity (alias lwp, spid).  This value may also appear as: a process ID (pid); a process group ID (pgrp); a session ID for the session leader (sid); a thread group ID for the thread group leader (tgid); and a tty process group ID for the process group leader (tpgid).
time        TIME      cumulative CPU time, "[DD-]HH:MM:SS" format. (alias cputime).
times       TIME      cumulative CPU time in seconds (alias cputimes).
tname       TTY       controlling tty (terminal).  (alias tt, tty).
tpgid       TPGID     ID of the foreground process group on the tty (terminal) that the process is connected to, or -1 if the process is not connected to a tty.
trs         TRS       text resident set size, the amount of physical memory devoted to executable code.
tt          TT        controlling tty (terminal).  (alias tname, tty).
tty         TT        controlling tty (terminal).  (alias tname, tt).
ucmd        CMD       see comm.  (alias comm, ucomm).
ucomm       COMMAND   see comm.  (alias comm, ucmd).
uid         UID       see euid.  (alias euid).
uname       USER      see euser.  (alias euser, user).
unit        UNIT      displays unit which a process belongs to, if systemd support has been included.
user        USER      see euser.  (alias euser, uname).
userns      USERNS    Unique inode number describing the namespace the process belongs to.  See namespaces(7).
utsns       UTSNS     Unique inode number describing the namespace the process belongs to.  See namespaces(7).
uunit       UUNIT     displays user unit which a process belongs to, if systemd support has been included.
vsize       VSZ       see vsz.  (alias vsz).
vsz         VSZ       virtual memory size of the process in KiB (1024-byte units).  Device mappings are currently excluded; this is subject to change.  (alias vsize).
wchan       WCHAN     name of the kernel function in which the process is sleeping, a "-" if the process is running, or a "*" if the process is multi-threaded and ps is not displaying threads.
The following environment variables could affect ps:
COLUMNS Override default display width.
LINES Override default display height.
PS_PERSONALITY Set to one of posix, old, linux, bsd, sun, digital... (see section PERSONALITY below).
CMD_ENV Set to one of posix, old, linux, bsd, sun, digital... (see section PERSONALITY below).
I_WANT_A_BROKEN_PS Force obsolete command line interpretation.
LC_TIME Date format.
PS_COLORS Not currently supported.
PS_FORMAT Default output format override.  You may set this to a format string of the type used for the -o option.  The DefSysV and DefBSD values are particularly useful.
POSIXLY_CORRECT Don't find excuses to ignore bad "features".
POSIX2 When set to "on", acts as POSIXLY_CORRECT.
UNIX95 Don't find excuses to ignore bad "features".
_XPG Cancel CMD_ENV=irix non-standard behavior.
In general, it is a bad idea to set these variables.  The one exception is CMD_ENV or PS_PERSONALITY, which could be set to Linux for normal systems.  Without that setting, ps follows the useless and bad parts of the Unix98 standard.
390        like the OS/390 OpenEdition ps aix        like AIX ps bsd        like FreeBSD ps (totally non-standard) compaq     like Digital Unix ps debian     like the old Debian ps digital    like Tru64 (was Digital Unix, was OSF/1) ps gnu        like the old Debian ps
hp         like HP-UX ps hpux       like HP-UX ps irix       like Irix ps linux      ***** recommended ***** old        like the original Linux ps (totally non-standard) os390      like OS/390 Open Edition ps posix      standard s390       like OS/390 Open Edition ps sco        like SCO ps sgi        like Irix ps solaris2   like Solaris 2+ (SunOS 5) ps sunos4     like SunOS 4 (Solaris 1) ps (totally non-standard) svr4       standard sysv       standard tru64      like Tru64 (was Digital Unix, was OSF/1) ps unix       standard unix95     standard unix98     standard
pgrep(1), pstree(1), top(1), proc(5).
This ps conforms to:
1   Version 2 of the Single Unix Specification 2   The Open Group Technical Standard Base Specifications, Issue 6 3   IEEE Std 1003.1, 2004 Edition 4   X/Open System Interfaces Extension [UP XSI] 5   ISO/IEC 9945:2003
ps was originally written by Branko Lankester ⟨lankeste@fwi.uva.nl⟩. Michael K. Johnson ⟨johnsonm@redhat.com⟩ re-wrote it significantly to use the proc filesystem, changing a few things in the process.  Michael Shields ⟨mjshield@nyx.cs.du.edu⟩ added the pid-list feature.  Charles Blake ⟨cblake@bbn.com⟩ added multi-level sorting, the dirent-style library, the device name-to-number mmaped database, the approximate binary search directly on System.map, and many code and documentation cleanups.  David Mossberger-Tang wrote the generic BFD support for psupdate.  Albert Cahalan ⟨albert@users.sf.net⟩ rewrote ps for full Unix98 and BSD support, along with some ugly hacks for obsolete and foreign syntax.
Please send bug reports to ⟨procps@freelists.org⟩.  No subscription is required or suggested.
BPYTOP(1)                    General Commands Manual                   BPYTOP(1)
BPYTOP - Resource monitor that shows usage and stats
bpytop
bpytop is a resource monitor that shows usage and stats for processor, memory, disks, network and processes. bpytop includes: - Easy to use, with a game inspired menu system. - Full mouse support, all buttons with a highlighted key is clickable and mouse scroll works in process list and menu boxes. - Fast and responsive UI with UP, DOWN keys process selection. - Function for showing detailed stats for selected process. - Ability to filter processes, multiple filters can be entered. - Easy switching between sorting options. - Send SIGTERM, SIGKILL, SIGINT to selected process. - UI menu for changing all config file options. - Auto scaling graph for network usage. - Shows current read and write speeds for disks
https://github.com/aristocratos/bpytop
bpytop was written by Aristocratos.
nvidia-smi(1)                        NVIDIA                        nvidia-smi(1)
nvidia-smi - NVIDIA System Management Interface program
nvidia-smi [OPTION1 [ARG1]] [OPTION2 [ARG2]] ...
nvidia-smi (also NVSMI) provides monitoring and management capabilities for each of NVIDIA's Tesla, Quadro, GRID and GeForce devices from Fermi and higher architecture families. GeForce Titan series devices are supported for most functions with very limited information provided for the remainder of the Geforce brand.  NVSMI is a cross platform tool that supports all standard NVIDIA driver-supported Linux distros, as well as 64bit versions of Windows starting with Windows Server 2008 R2.  Metrics can be consumed directly by users via stdout, or provided by file via CSV and XML formats for scripting purposes.
Note that much of the functionality of NVSMI is provided by the underlying NVML C-based library.  See the NVIDIA developer website link below for more information about NVML.  NVML-based python bindings are also available.
The output of NVSMI is not guaranteed to be backwards compatible. However, both NVML and the Python bindings are backwards compatible, and should be the first choice when writing any tools that must be maintained across NVIDIA driver releases.
NVML SDK: http://developer.nvidia.com/nvidia-management-library-nvml/
Python bindings: http://pypi.python.org/pypi/nvidia-ml-py/
GENERAL OPTIONS -h, --help Print usage information and exit.
SUMMARY OPTIONS -L, --list-gpus List each of the NVIDIA GPUs in the system, along with their UUIDs.
-B, --list-excluded-gpus List each of the excluded NVIDIA GPUs in the system, along with their UUIDs.
QUERY OPTIONS -q, --query Display GPU or Unit info.  Displayed info includes all data listed in the (GPU ATTRIBUTES) or (UNIT ATTRIBUTES) sections of this document.  Some devices and/or environments don't support all possible information.  Any unsupported data is indicated by a "N/A" in the output.  By default information for all available GPUs or Units is displayed.  Use the -i option to restrict the output to a single GPU or Unit.
[plus optional] -u, --unit Display Unit data instead of GPU data.  Unit data is only available for NVIDIA S-class Tesla enclosures.
-i, --id=ID Display data for a single specified GPU or Unit.  The specified id may be the GPU/Unit's 0-based index in the natural enumeration returned by the driver, the GPU's board serial number, the GPU's UUID, or the GPU's PCI bus ID (as domain:bus:device.function in hex).  It is recommended that users desiring consistency use either UUID or PCI bus ID, since device enumeration ordering is not guaranteed to be consistent between reboots and board serial number might be shared between multiple GPUs on the same board.
-f FILE, --filename=FILE Redirect query output to the specified file in place of the default stdout.  The specified file will be overwritten.
-x, --xml-format Produce XML output in place of the default human-readable format.  Both GPU and Unit query outputs conform to corresponding DTDs.  These are available via the --dtd flag.
--dtd Use with -x.  Embed the DTD in the XML output.
--debug=FILE Produces an encrypted debug log for use in submission of bugs back to NVIDIA.
-d TYPE, --display=TYPE Display only selected information: MEMORY, UTILIZATION, ECC, TEMPERATURE, POWER, CLOCK, COMPUTE, PIDS, PERFORMANCE, SUPPORTED_CLOCKS, PAGE_RETIREMENT, ACCOUNTING, ENCODER_STATS, ROW_REMAPPER, VOLTAGE.  Flags can be combined with comma e.g.  "MEMORY,ECC".  Sampling data with max, min and avg is also returned for POWER, UTILIZATION and CLOCK display types.  Doesn't work with -u/--unit or -x/--xml-format flags.
-l SEC, --loop=SEC Continuously report query data at the specified interval, rather than the default of just once.  The application will sleep in-between queries. Note that on Linux ECC error or XID error events will print out during the sleep period if the -x flag was not specified.  Pressing Ctrl+C at any time will abort the loop, which will otherwise run indefinitely.  If no argument is specified for the -l form a default interval of 5 seconds is used.
SELECTIVE QUERY OPTIONS Allows the caller to pass an explicit list of properties to query.
[one of] --query-gpu= Information about GPU.  Pass comma separated list of properties you want to query.  e.g. --query-gpu=pci.bus_id,persistence_mode.  Call --help-query-gpu for more info.
--query-supported-clocks= List of supported clocks.  Call --help-query-supported-clocks for more info.
--query-compute-apps= List of currently active compute processes.  Call --help-query-compute-apps for more info.
--query-accounted-apps= List of accounted compute processes.  Call --help-query-accounted-apps for more info.  This query is not supported on vGPU host.
--query-retired-pages= List of GPU device memory pages that have been retired.  Call --help-query-retired-pages for more info.
--query-remapped-rows= Information about remapped rows.  Call --help-query-remapped-rows for more info.
[mandatory] --format= Comma separated list of format options:
•      csv - comma separated values (MANDATORY)
•      noheader - skip first line with column headers
•      nounits - don't print units for numerical values
[plus any of] -i, --id=ID Display data for a single specified GPU.  The specified id may be the GPU's 0-based index in the natural enumeration returned by the driver, the GPU's board serial number, the GPU's UUID, or the GPU's PCI bus ID (as domain:bus:device.function in hex).  It is recommended that users desiring consistency use either UUID or PCI bus ID, since device enumeration ordering is not guaranteed to be consistent between reboots and board serial number might be shared between multiple GPUs on the same board.
-lms ms, --loop-ms=ms Same as -l,--loop but in milliseconds.
DEVICE MODIFICATION OPTIONS [any one of] -pm, --persistence-mode=MODE Set the persistence mode for the target GPUs.  See the (GPU ATTRIBUTES) section for a description of persistence mode.  Requires root.  Will impact all GPUs unless a single GPU is specified using the -i argument. The effect of this operation is immediate.  However, it does not persist across reboots.  After each reboot persistence mode will default to "Disabled".  Available on Linux only.
-e, --ecc-config=CONFIG Set the ECC mode for the target GPUs.  See the (GPU ATTRIBUTES) section for a description of ECC mode.  Requires root.  Will impact all GPUs unless a single GPU is specified using the -i argument.  This setting takes effect after the next reboot and is persistent.
-p, --reset-ecc-errors=TYPE Reset the ECC error counters for the target GPUs.  See the (GPU ATTRIBUTES) section for a description of ECC error counter types. Available arguments are 0|VOLATILE or 1|AGGREGATE.  Requires root.  Will impact all GPUs unless a single GPU is specified using the -i argument. The effect of this operation is immediate.
-c, --compute-mode=MODE Set the compute mode for the target GPUs.  See the (GPU ATTRIBUTES) section for a description of compute mode.  Requires root.  Will impact all GPUs unless a single GPU is specified using the -i argument.  The effect of this operation is immediate.  However, it does not persist across reboots.  After each reboot compute mode will reset to "DEFAULT".