uu_[ - Man Page

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

Check file types and compare values.

-h,  --help

Print help

-V,  --version

Print version

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.

v0.0.27