On Mon, 07 Jan 2008 00:33:36 +0100, Bjoern Schliessmann wrote: > Steven D'Aprano wrote: > >> grep doesn't delete lines. grep matches lines. If you want to delete >> them, you still have to do the rest of the job yourself. > > In which way does "grep -v mypattern myfile > myfile" not delete the > lines matching mypattern?
Okay, that will delete the lines matching mypattern. Unfortunately it will also delete all the lines NOT matching mypattern as well. Try it for yourself -- just not on anything you care about. This is what happens when abstractions leak. You *think* you're deleting lines, but you're not. That's just an abstraction, and when it leaks, you break things. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
