tldr/pages/common/[.md

26 lines
562 B
Markdown
Raw Normal View History

# [
> Check file types and compare values.
> Returns 0 if the condition evaluates to true, 1 if it evaluates to false.
> More information: <https://www.gnu.org/software/coreutils/test>.
- Test if a given variable is equal to a given string:
`[ "{{$VARIABLE}}" == "{{/bin/zsh}}" ]`
- Test if a given variable is empty:
`[ -z "{{$GIT_BRANCH}}" ]`
- Test if a file exists:
`[ -f "{{path/to/file}}" ]`
- Test if a directory does not exist:
`[ ! -d "{{path/to/directory}}" ]`
- If-else statement:
`[ {{condition}} ] && {{echo "true"}} || {{echo "false"}}`