Checking a variable is set
Published: Wednesday, Dec 26, 2007 Last modified: Monday, Apr 8, 2024
Common:
[[ $FILES ]] || echo "No files!"; break
More correct:
[[ ${var+set} ]] && echo set || echo unset
Actually using test is better.
Common:
[[ $FILES ]] || echo "No files!"; break
More correct:
[[ ${var+set} ]] && echo set || echo unset
Actually using test is better.