On Thu, May 06, 2010 at 18:27:12 +0530, "W.H. Kalpa Pathum" <callkalpa@xxxxxxxxx> wrote: > hi, > > I've got two text files containing email addresses one at a row. The > number of rows in one file is different from the number of the other > file. email addresses in one file is already there in the other file > (there are some more also). What I want to do is extract the list > which is not in the other file. I do a lot of this at work when needing to deal with lists of accounts. First make sure the lists are sorted and that there is only one copy of each address if that makes sense. This assumes that the email addresses are in a canoical form of some kind. sort -u file1 > file1.s sort -u file2 > file2.s Get lines in file1 but not file2: comm -2 -3 file1 file2 Note that you might need sort and comm using the same locale for their sort. On some old machines I have had one using LANG_C whole the other used en_US, which caused problems when there is mixed case. I don't think that will be an issue with Fedora. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
