On Fri, May 7, 2010 at 1:49 AM, Bruno Wolff III <bruno@xxxxxxxx> wrote: > 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. > Thanks -- Best Regards, W.H.Kalpa Pathum http://kalpapathum.blogspot.com http://thiraya.wordpress.com -- 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
