An omitted EXPRESSION defaults to false. Otherwise,
EXPRESSION is true or false and sets exit status. It is one of:
( EXPRESSION )
EXPRESSION is true
EXPRESSION is false
EXPRESSION1 -a EXPRESSION2
both EXPRESSION1 and EXPRESSION2 are true
EXPRESSION1 -o EXPRESSION2
either EXPRESSION1 or EXPRESSION2 is true
the length of STRING is nonzero
equivalent to -n 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
FILE exists and is block special
FILE exists and is character special
FILE exists and is a directory
FILE exists and is a regular file
FILE exists and is set-group-ID
FILE exists and is owned by the effective group ID
FILE exists and is a symbolic link (same as -L)
FILE exists and has its sticky bit set
FILE exists and is a symbolic link (same as -h)
FILE exists and is owned by the effective user ID
FILE exists and is a named pipe
FILE exists and read permission is granted
FILE exists and has a size greater than zero
FILE exists and is a socket
file descriptor FD is opened on a terminal
FILE exists and its set-user-ID bit is set
FILE exists and write permission is granted
FILE exists and execute (or search) permission is granted
Except for -h and -L, all FILE-related tests dereference symbolic links.
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.
NOTE: your shell may have its own version of test and/or [, which usually supersedes
the version described here. Please refer to your shell's documentation
for details about the options it supports.
Written by Kevin Braunsdorf and Matthew Bradburn.
Report bugs to <firstname.lastname@example.org>.
Copyright 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
The full documentation for
is maintained as a Texinfo manual. If the
programs are properly installed at your site, the command