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tldr/pages/common/[.md
Ignacio Mattos 369d034b50
[, aapt, ab: add Spanish translation (#5840)
* [: add Spanish translation

* aapt: add Spanish translation

* ab: add Spanish translation
2021-04-30 10:01:31 -03:00

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# [
> Evaluate condition.
> 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"}}`