Bash: loop through files that DO NOT match extension

Question

I\'m writing a bash script that needs to loop files inside a directory that do not match a specific extension. So far, I\'ve found that the following code loops all files th

Answer 1

to loop files inside a directory that do not match a specific extension

You can use extglob:

shopt -s extglob

for f in *.!(txt); do
    echo "$f"
done

pattern *.!(txt) will match all entries with a dot and no txt after the dot.

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EDIT: Please see comments below. Here is a find version to loop through files in current directory that don't match a particular extension:

while IFS= read -d '' -r f; do
    echo "$f"
done < <(find . -maxdepth 1 -type f -not -name '*.txt' -print0)