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Check file types and compare values.

Synopsis

[ [-h|--help] [-V|--version]

Description

Check file types and compare values.

Options

-h,  --help

Print help

-V,  --version

Print version

Extra

Exit with the status determined by EXPRESSION.

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

String operations: * -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

Integer comparisons: * 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

File operations: * 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) * -N FILE     FILE exists and has been modified since it was last read * -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 (follow) 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: Binary -a and -o are inherently ambiguous. Use test EXPR1 && test EXPR2 or test EXPR1 || test EXPR2 instead.

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.

Version

v0.0.27

Info

[ 0.0.27