I'm secretly a security buff and try to keep things as locked down as possible, so would like to solve this little annoyance I have whenever cron runs. It's executing the typical shadow script daily, but it's grpck -r output lists this error:
invalid shadow group file entry
delete line ''? No
grpck: no changes
Here is the relevant group file. It was late when I last looked at it, but I can't find any line that could be causing this problem. It's trivial, but it's annoying! Can anyone help me?