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test - check file types and compare values
test EXPRESSION
test EXPRESSION ]
test OPTION
Exit with the status determined by EXPRESSION.
- --help
- display this help and exit
- --version
- output version information and exit
EXPRESSION is true or false and sets exit status. It is one of:
- ( EXPRESSION
)
- EXPRESSION is true
- ! EXPRESSION
- EXPRESSION is false
- EXPRESSION1 -a EXPRESSION2
- both EXPRESSION1 and EXPRESSION2 are true
- EXPRESSION1 -o EXPRESSION2
- either
EXPRESSION1 or EXPRESSION2 is true
- [-n] STRING
- the length of STRING is nonzero
- -z STRING
- the length of STRING is zero
- STRING1 = STRING2
- the strings are
equal
- STRING1 != STRING2
- the strings are not equal
- INTEGER1 -eq INTEGER2
- INTEGER1 is equal to INTEGER2
- INTEGER1 -ge INTEGER2
- INTEGER1 is greater
than or equal to INTEGER2
- INTEGER1 -gt INTEGER2
- INTEGER1 is greater than
INTEGER2
- INTEGER1 -le INTEGER2
- INTEGER1 is less than or equal to INTEGER2
- INTEGER1 -lt INTEGER2
- INTEGER1 is less than INTEGER2
- INTEGER1 -ne INTEGER2
- INTEGER1 is not equal to INTEGER2
- FILE1 -ef FILE2
- FILE1 and FILE2 have the
same device and inode numbers
- FILE1 -nt FILE2
- FILE1 is newer (modification
date) than FILE2
- FILE1 -ot FILE2
- FILE1 is older than FILE2
- -b FILE
- FILE exists
and is block special
- -c FILE
- FILE exists and is character special
- -d FILE
- FILE exists and is a directory
- -e FILE
- FILE exists
- -f FILE
- FILE exists and
is a regular file
- -g FILE
- FILE exists and is set-group-ID
- -G FILE
- FILE exists
and is owned by the effective group ID
- -k FILE
- FILE exists and has its sticky
bit set
- -L FILE
- FILE exists and is a symbolic link
- -O FILE
- FILE exists and
is owned by the effective user ID
- -p FILE
- FILE exists and is a named pipe
- -r FILE
- FILE exists and is readable
- -s FILE
- FILE exists and has a size greater
than zero
- -S FILE
- FILE exists and is a socket
- -t [FD]
- file descriptor FD
(stdout by default) is opened on a terminal
- -u FILE
- FILE exists and its
set-user-ID bit is set
- -w FILE
- FILE exists and is writable
- -x FILE
- FILE exists
and is executable
Beware that parentheses need to be escaped (e.g., by backslashes)
for shells. INTEGER may also be -l STRING, which evaluates to the length
of STRING.
Report bugs to <bug-sh-utils@gnu.org>.
The full
documentation for test is maintained as a Texinfo manual. If the info and
test programs are properly installed at your site, the command
- info test
should give you access to the complete manual.
Copyright © 1999
Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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