Re^3: Filtering lines from one file from another

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Re^4: Filtering lines from one file from another by bellaire (Hermit) on Feb 03, 2011 at 19:05 UTC
True, or even further, `grep -xvFf`, to not only match the entire line, but to treat the "patterns" from file2 as fixed strings rather than regexes. L~R has a good point about large file size limitations, though. I can't really speak to that point.	[reply] [d/l]
Re^4: Filtering lines from one file from another by Limbic~Region (Chancellor) on Feb 03, 2011 at 23:48 UTC
antonn, The reason it seems to work is due to your specific data set. The solution without modification is fragile. This is because grep assumes that the file contains regular expressions (called patterns) not fixed strings. It would be better to add the -F option as shown by bellaire to treat them as fixed strings. Cheers - L~R	[reply]