Pattern: Use of glob in [/[[
Issue: -
This rule warns when using globs in [/[[.
Example of incorrect code:
if [ -e dir/*.mp3 ]
then
echo "There are mp3 files."
fi[ -e file* ] only works if there's 0 or 1 matches. If there are multiple, it becomes [ -e file1 file2 ], and the test fails.
[[ -e file* ]] doesn't work at all.
Instead, use a for loop to expand the glob and check each result individually.
Example of correct code:
for file in dir/*.mp3
do
if [ -e "$file" ]
then
echo "There are mp3 files"
break
fi
done