You can't actually remove stuff from a file.
What you need to do instead is copy the contents from the old file to a new one (except for the stuff you don't want copied), and then replace the original with the new version.
See How do I change one line in a file/delete a line in a file/insert a line in the middle of a file/append to the beginning of a file? for more details.

In reply to Re: How to remove lines out of an ascii file by tommyw
in thread How to remove lines out of an ascii file by juo

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