TEST(1)

NAME
test - check file types and compare values

SYNOPSIS
test EXPRESSION
test
[ EXPRESSION ]
[ ]
[ OPTION

DESCRIPTION

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/>

AUTHOR
Written by Kevin Braunsdorf and Matthew Bradburn.

COPYRIGHT
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.

SEE ALSO
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.