[Huawei Ascend P7] jkmaxfli:
It must be correctly without the space between pull and /cache. , look at the log dump .

C:\platform-tools>adb pull /cache/recovery/last_log
error: device not found

C:\platform-tools>adb pull/cache/recovery/last_log
Android Debug Bridge version 1.0.31

-a - directs adb to listen on all interfaces for a c
onnection
-d - directs command to the only connected USB devic
e
returns an error if more than one USB device is
present.
-e - directs command to the only running emulator.
returns an error if more than one emulator is r
unning.
-s <specific device> - directs command to the device or emulator with
the given
serial number or qualifier. Overrides ANDROID_S
ERIAL
environment variable.
-p <product name or path> - simple product name like 'sooner', or
a relative/absolute path to a product
out directory like 'out/target/product/sooner'.

If -p is not specified, the ANDROID_PRODUCT_OUT

environment variable is used, which must
be an absolute path.
-H - Name of adb server host (default: localhost)
-P - Port of adb server (default: 5037)
devices [-l] - list all connected devices
('-l' will also list device qualifiers)
connect <host>[:<port>] - connect to a device via TCP/IP
Port 5555 is used by default if no port number
is specified.
disconnect [<host>[:<port>]] - disconnect from a TCP/IP device.
Port 5555 is used by default if no port number
is specified.
Using this command with no additional arguments

will disconnect from all connected TCP/IP devic
es.

device commands:
adb push <local> <remote> - copy file/dir to device
adb pull <remote> [<local>] - copy file/dir from device
adb sync [ <directory> ] - copy host->device only if changed
(-l means list but don't copy)
(see 'adb help all')
adb shell - run remote shell interactively
adb shell <command> - run remote shell command
adb emu <command> - run emulator console command
adb logcat [ <filter-spec> ] - View device log
adb forward --list - list all forward socket connections.
the format is a list of lines with the followin
g format:
<serial> " " <local> " " <remote> "\n"
adb forward <local> <remote> - forward socket connections
forward specs are one of:
tcp:<port>
localabstract:<unix domain socket name>
localreserved:<unix domain socket name>
localfilesystem:<unix domain socket name>
dev:<character device name>
jdwp:<process pid> (remote only)
adb forward --no-rebind <local> <remote>
- same as 'adb forward <local> <remote>' but fail
s
if <local> is already forwarded
adb forward --remove <local> - remove a specific forward socket connection
adb forward --remove-all - remove all forward socket connections
adb jdwp - list PIDs of processes hosting a JDWP transport

adb install [-l] [-r] [-s] [--algo <algorithm name> --key <hex-encoded key> --
iv <hex-encoded iv>] <file>
- push this package file to the device and instal
l it
('-l' means forward-lock the app)
('-r' means reinstall the app, keeping its data
)
('-s' means install on SD card instead of inter
nal storage)
('--algo', '--key', and '--iv' mean the file is
encrypted already)
adb uninstall [-k] <package> - remove this app package from the device
('-k' means keep the data and cache directories
)
adb bugreport - return all information from the device
that should be included in a bug report.

adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all]
[-system|-nosystem] [<packages...>]
- write an archive of the device's data to <file>
.
If no -f option is supplied then the data is wr
itten
to "backup.ab" in the current directory.
(-apk|-noapk enable/disable backup of the .apks
themselves
in the archive; the default is noapk.)
(-obb|-noobb enable/disable backup of any insta
lled apk expansion
(aka .obb) files associated with each applic
ation; the default
is noobb.)
(-shared|-noshared enable/disable backup of the
device's
shared storage / SD card contents; the defau
lt is noshared.)
(-all means to back up all installed applicatio
ns)
(-system|-nosystem toggles whether -all automat
ically includes
system applications; the default is to inclu
de system apps)
(<packages...> is the list of applications to b
e backed up. If
the -all or -shared flags are passed, then t
he package
list is optional. Applications explicitly g
iven on the
command line will be included even if -nosys
tem would
ordinarily cause them to be omitted.)

adb restore <file> - restore device contents from the <file> backup
archive

adb help - show this help message
adb version - show version num

scripting:
adb wait-for-device - block until device is online
adb start-server - ensure that there is a server running
adb kill-server - kill the server if it is running
adb get-state - prints: offline | bootloader | device
adb get-serialno - prints: <serial-number>
adb get-devpath - prints: <device-path>
adb status-window - continuously print device status for a specifie
d device
adb remount - remounts the /system partition on the device re
ad-write
adb reboot [bootloader|recovery] - reboots the device, optionally into the boo
tloader or recovery program
adb reboot-bootloader - reboots the device into the bootloader
adb root - restarts the adbd daemon with root permissions
adb usb - restarts the adbd daemon listening on USB
adb tcpip <port> - restarts the adbd daemon listening on TCP on th
e specified port
networking:
adb ppp <tty> [parameters] - Run PPP over USB.
Note: you should not automatically start a PPP connection.
<tty> refers to the tty for PPP stream. Eg. dev:/dev/omap_csmi_tty1
[parameters] - Eg. defaultroute debug dump local notty usepeerdns

adb sync notes: adb sync [ <directory> ]
<localdir> can be interpreted in several ways:

- If <directory> is not specified, both /system and /data partitions will be u
pdated.

- If it is "system" or "data", only the corresponding partition
is updated.

environmental variables:
ADB_TRACE - Print debug information. A comma separated list
of the following values
1 or all, adb, sockets, packets, rwx, usb, sync
, sysdeps, transport, jdwp
ANDROID_SERIAL - The serial number to connect to. -s takes prior
ity over this if given.
ANDROID_LOG_TAGS - When used with the logcat option, only these de
bug tags are printed.

C:\platform-tools>