Find Text Files Containing Trailing Spaces

find . -iname "*.c" -or -iname "*.h" | xargs egrep -l ' +[[:cntrl:]]*$'

The expression [[:cntrl:]]* is used to make sure this also works for files with DOS/Windows line endings, i.e. a CR before the LF.

— Martin Burnicki martin.burnicki@burnicki.net, last updated 2023-04-17