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mktemp

create a temporary file or directory


  1. mktemp.1.man
  2. mktemp.3.man


1. mktemp.1.man

Manpage of MKTEMP

MKTEMP

Section: User Commands (1)
Updated: October 2011
Index Return to Main Contents
 

NAME

mktemp - create a temporary file or directory  

SYNOPSIS

mktemp [OPTION]... [TEMPLATE]  

DESCRIPTION

Create a temporary file or directory, safely, and print its name. TEMPLATE must contain at least 3 consecutive `X's in last component. If TEMPLATE is not specified, use tmp.XXXXXXXXXX, and --tmpdir is implied. Files are created u+rw, and directories u+rwx, minus umask restrictions.

-d, --directory
create a directory, not a file
-u, --dry-run
do not create anything; merely print a name (unsafe)
-q, --quiet
suppress diagnostics about file/dir-creation failure
--suffix=SUFF
append SUFF to TEMPLATE. SUFF must not contain slash. This option is implied if TEMPLATE does not end in X.
--tmpdir[=DIR]
interpret TEMPLATE relative to DIR. If DIR is not specified, use $TMPDIR if set, else /tmp. With this option, TEMPLATE must not be an absolute name. Unlike with -t, TEMPLATE may contain slashes, but mktemp creates only the final component
-p DIR
use DIR as a prefix; implies -t [deprecated]
-t
interpret TEMPLATE as a single file name component, relative to a directory: $TMPDIR, if set; else the directory specified via -p; else /tmp [deprecated]
--help
display this help and exit
--version
output version information and exit
 

AUTHOR

Written by Jim Meyering and Eric Blake.  

REPORTING BUGS

Report mktemp bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report mktemp translation bugs to <http://translationproject.org/team/>  

COPYRIGHT

Copyright © 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.  

SEE ALSO

mkstemp(3), mkdtemp(3), mktemp(3)

The full documentation for mktemp is maintained as a Texinfo manual. If the info and mktemp programs are properly installed at your site, the command

info coreutils aqmktemp invocationaq

should give you access to the complete manual.


 

Index

NAME
SYNOPSIS
DESCRIPTION
AUTHOR
REPORTING BUGS
COPYRIGHT
SEE ALSO

This document was created by man2html using the manual pages.
Time: 17:31:44 GMT, October 23, 2013

2. mktemp.3.man

Manpage of MKTEMP

MKTEMP

Section: Linux Programmer's Manual (3)
Updated: 2010-09-20
Index Return to Main Contents
 

NAME

mktemp - make a unique temporary filename  

SYNOPSIS

#include <stdlib.h>

char *mktemp(char *template);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

mktemp():

Since glibc 2.12:
_BSD_SOURCE || _SVID_SOURCE ||
    (_XOPEN_SOURCE >= 500 ||
         _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) &&
    !(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
Before glibc 2.12:
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED
 

DESCRIPTION

The mktemp() function generates a unique temporary filename from template. The last six characters of template must be XXXXXX and these are replaced with a string that makes the filename unique. Since it will be modified, template must not be a string constant, but should be declared as a character array.  

RETURN VALUE

The mktemp() function always returns template. If a unique name was created, the last six bytes of template will have been modified in such a way that the resulting name is unique (i.e., does not exist already) If a unique name could not be created, template is made an empty string.  

ERRORS

EINVAL
The last six characters of template were not XXXXXX.
 

CONFORMING TO

4.3BSD, POSIX.1-2001. POSIX.1-2008 removes the specification of mktemp().  

NOTES

The prototype is in <unistd.h> for libc4, libc5, glibc1; glibc2 follows the Single UNIX Specification and has the prototype in <stdlib.h>.  

BUGS

Never use mktemp(). Some implementations follow 4.3BSD and replace XXXXXX by the current process ID and a single letter, so that at most 26 different names can be returned. Since on the one hand the names are easy to guess, and on the other hand there is a race between testing whether the name exists and opening the file, every use of mktemp() is a security risk. The race is avoided by mkstemp(3).  

SEE ALSO

mkstemp(3), tempnam(3), tmpfile(3), tmpnam(3)  

COLOPHON

This page is part of release 3.32 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
NOTES
BUGS
SEE ALSO
COLOPHON

This document was created by man2html using the manual pages.
Time: 17:31:44 GMT, October 23, 2013

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