pgrep: what's next?

• I recently discovered that this doesn't work:

        % ls some/directory | pgrep -I pattern    
        Couldn't open 'file1': No such file or directory; skipping
        Couldn't open 'file2': No such file or directory; skipping
        Couldn't open 'file3': No such file or directory; skipping
        Couldn't open 'file4': No such file or directory; skipping

• So sometime soon I guess I'll add a -p prefix option to pgrep

• The right place to fix this would be in ls

• I was amazed to discover that none of ls's 48 options do what I want

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Copyright © 2012 M. J. Dominus