test − check file types and compare values
test
EXPRESSION
test
[
EXPRESSION ]
[ ]
[ OPTION
Exit with the status determined by EXPRESSION.
|
−−help |
display this help and exit |
−−version
output version information and exit
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
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
|
STRING |
equivalent to −n STRING |
−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
−h FILE
FILE exists and is a symbolic link (same as −L)
−k FILE
FILE exists and has its sticky bit set
−L FILE
FILE exists and is a symbolic link (same as −h)
−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 read permission is granted
−s FILE
FILE exists and has a size greater than zero
−S FILE
FILE exists and is a socket
|
−t FD |
file descriptor FD is opened on a terminal |
−u FILE
FILE exists and its set−user−ID bit is set
−w FILE
FILE exists and write permission is granted
−x FILE
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: [ honors the −−help and −−version options, but test does not. test treats each of those as it treats any other nonempty 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.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report [ translation bugs to <http://translationproject.org/team/>
Written by Kevin Braunsdorf and Matthew Bradburn.
Copyright
© 2014 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and
redistribute it. There is NO WARRANTY, to the extent
permitted by law.
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 coreutils 'test invocation'
should give you access to the complete manual.
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