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.\" preserved on all copies.
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.\"
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.\" permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" since the linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. the author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. the author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\" %%%license_end
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.th mkdtemp 3 2021-03-22 "gnu" "linux programmer's manual"
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.sh name
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mkdtemp \- create a unique temporary directory
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.sh synopsis
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.nf
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.b #include <stdlib.h>
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.pp
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.bi "char *mkdtemp(char *" template );
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.fi
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.pp
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.rs -4
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feature test macro requirements for glibc (see
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.br feature_test_macros (7)):
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.re
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.pp
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.br mkdtemp ():
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.nf
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/* since glibc 2.19: */ _default_source
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|| /* glibc 2.19 and earlier: */ _bsd_source
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|| /* since glibc 2.10: */ _posix_c_source >= 200809l
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.fi
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.sh description
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the
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.br mkdtemp ()
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function generates a uniquely named temporary
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directory from \fitemplate\fp.
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the last six characters of \fitemplate\fp
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must be xxxxxx and these are replaced with a string that makes the
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directory name unique.
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the directory is then created with
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permissions 0700.
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since it will be modified,
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.i template
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must not be a string constant, but should be declared as a character array.
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.sh return value
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the
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.br mkdtemp ()
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function returns a pointer to the modified template
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string on success, and null on failure, in which case
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.i errno
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is set to indicate the error.
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.sh errors
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.tp
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.b einval
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the last six characters of \fitemplate\fp were not xxxxxx.
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now \fitemplate\fp is unchanged.
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.pp
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also see
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.br mkdir (2)
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for other possible values for \fierrno\fp.
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.sh versions
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available since glibc 2.1.91.
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.sh attributes
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for an explanation of the terms used in this section, see
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.br attributes (7).
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.ad l
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.nh
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.ts
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allbox;
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lbx lb lb
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l l l.
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interface attribute value
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t{
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.br mkdtemp ()
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t} thread safety mt-safe
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.te
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.hy
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.ad
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.sp 1
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.sh conforming to
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posix.1-2008.
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this function is present on the bsds.
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.\" as at 2006, this function is being considered for a revision of posix.1
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.\" also in netbsd 1.4.
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.sh see also
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.br mktemp (1),
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.br mkdir (2),
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.br mkstemp (3),
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.br mktemp (3),
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.br tempnam (3),
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.br tmpfile (3),
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