TEMPFILE
Section: User Commands (1)
Updated: 1 May 2009
NAME
tempfile - create a temporary file in a safe manner
SYNOPSIS
tempfile
[-d DIR] [-p STRING] [-s STRING] [-m MODE] [-n FILE] [--directory=DIR]
[--prefix=STRING] [--suffix=STRING] [--mode=MODE] [--name=FILE] [--help] [--version]
DESCRIPTION
tempfile
creates a temporary file in a safe manner. It uses
tempnam(3)
to choose the name and opens it with O_RDWR | O_CREAT | O_EXCL. The filename
is printed on standard output. See
tempnam(3)
for the actual steps involved in directory selection.
The directory in which to create the file might be searched for in this
order (but refer to
tempnam(3)
for authoritative answers):
- a)
-
In case the environment variable
TMPDIR
exists and
contains the name of an appropriate directory, that is used.
- b)
-
Otherwise, if the
--directory
argument is specified and appropriate, it is used.
- c)
-
Otherwise,
P_tmpdir
(as defined in
<stdio.h>)
is used when appropriate.
- d)
-
Finally an implementation-defined directory
(/tmp)
may be used.
OPTIONS
- -d, --directory DIR
-
Place the file in DIR.
- -p, --prefix STRING
-
Use up to five letters of STRING to generate the name.
- -s, --suffix STRING
-
Generate the file with STRING as the suffix.
- -m, --mode MODE
-
Open the file with MODE instead of 0600.
- -n, --name FILE
-
Use FILE for the name instead of
tempnam(3).
The options -d, -p, and -s are ignored if this option is given.
- --help
-
Print a usage message on standard output and exit successfully.
- --version
-
Print version information on standard output and exit successfully.
RETURN VALUES
An exit status of 0 means the temporary file was created successfully.
Any other exit status indicates an error.
BUGS
Exclusive creation is not guaranteed when creating files on NFS
partitions.
EXAMPLE
-
#!/bin/sh
#[...]
t=$(tempfile) || exit
trap "rm -f -- '$t'" EXIT
#[...]
rm -f -- "$t"
trap - EXIT
exit
SEE ALSO
tempnam(3),
mktemp(1)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- RETURN VALUES
-
- BUGS
-
- EXAMPLE
-
- SEE ALSO
-
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Time: 07:35:50 GMT, March 26, 2013