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

This will do:

shopt -s extglob
for f in !(*.txt) ; do
    echo $f
done

You just inverse the glob pattern using !(glob_pat), and to use it, you need to enable extended glob.

If you want to ignore directories, then:

shopt -s extglob
for f in !(*.txt) ; do
    [ -d "$f" ] && continue   # This will ignore dirs
    # [ -f "$f" ] && continue # This will ignore files
    echo $f
done

If you wanna go into all sub-dirs then:

shopt -s extglob globstar
for f in !(*.txt) **/!(*.txt) ; do
    [ -d "$f" ] && continue   # This will ignore dirs
    # [ -f "$f" ] && continue # This will ignore files
    echo $f
done