mirror of https://github.com/CrimsonTome/tldr.git
593 B
593 B
if
Simple shell conditional.
- Echo a different thing depending on a command's success:
if {{command}}; then echo "success"; else echo "failure"; fi
- Full if syntax:
if {{condition}}; then echo "true"; else echo "false"; fi
- List available if conditions:
help test
- Test if a given variable is empty:
if [[ -z $GIT_BRANCH ]]; then echo "true"; else echo "false"; fi
- Test if a file exists:
if [[ -e {{filename}} ]]; then echo "true"; else echo "false"; fi
- If directory not exists:
if [[ ! -d {{path/to/directory}} ]]; then echo "true"; else echo "false"; fi