ls | grep
. Use a glob or a for loop with a condition to allow non-alphanumeric filenames.ls /directory | grep mystring
or
rm $(ls | grep -v '\.c$')
ls /directory/*mystring*
or
# BASH
shopt -s extglob
rm -- !(*.c)
# POSIX
for f in ./*
do
case $f in
) true;;
*.c*) rm "$f";;
esac
done
Parsing ls is generally a bad idea because the output is fragile and human readable. To better handle non-alphanumeric filenames, use a glob. If you need more advanced matching than a glob can provide, use a for
loop.
ls
has sorting options that are tricky to get right with other commands. If a specific order of files is needed, ls <sort options> | grep might be the best alternative.ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.