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test

Return true or false by performing tests. toybox

On Linux 1 Sigma rule name it

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Linux

from the toybox, 0BSD

Return true or false by performing tests. No arguments is false, one argument is true if not empty string. --- Tests with a single argument (after the option): --- Tests with one argument on each side of an operator:

test [-bcdefghkLprSsuwx PATH] [-nz STRING] [-t FD] [X ?? Y]
Show 28 options
-b PATHblock device
-f PATHregular file
-p PATHfifo
-u PATHsetuid bit
-c PATHchar device
-g PATHsetgid
-r PATHreadable
-w PATHwritable
-d PATHdirectory
-h PATHsymlink
-S PATHsocket
-x PATHexecutable
-e PATHexists
-L PATHsymlink
-s PATHnonzero size
-k PATHsticky bit
-n STRINGnonzero size
-z STRINGzero size
-t FDa TTY = are identical != differ =~ string matches regex < first is lower > first higher
-eqequal
-gtfirst > second
-ltfirst < second
-nenot equal
-gefirst >= second
-lefirst <= second
-otOlder mtime
-ntNewer mtime
-efsame dev/inode ! EXPR not (swap true/false) EXPR -a EXPR and (are both true) ( EXPR ) evaluate this first EXPR -o EXPR or (is either true)

Several platforms

from tldr-pages, CC BY 4.0

Check file types and compare values. Returns 0 if the condition evaluates to true, 1 if it evaluates to false.

Test if a given variable is equal to a given string

test "$MY_VAR" = "/bin/zsh"Identify

Test if a given variable is empty (zero length)

test -z "$GIT_BRANCH"Identify
-zzero size toybox

Test if a file exists

test -f "path/to/file"Identify
-fregular file toybox

Test if a directory does not exist

test ! -d "path/to/directory"Identify
-ddirectory toybox

If A is true, then do B, or C in the case of an error (notice that C may run even if A fails)

test condition && echo "true" || echo "false"Identify

Use test in a conditional statement

if test -f "path/to/file"; then echo "File exists"; else echo "File does not exist"; fiIdentify
-fregular file toybox

Display help

help testIdentify

What detects it

Sigma process creation rules that name test
lowDocker Container Discovery Via Dockerenv ListingSeth Hanford