Hi I appreciate this is off-topic but I would be grateful for some help on this. Basically,I want to add a few lines after matching a couple of lines in a file using sed, can someone please tell me how to do this. Lines to match server 10.33.45.3 server ldap.example.com server orion I want to comment these lines so they become: # server 10.33.45.3 # server ldap.example.com # server orion Then append these lines after the commented lines server fire.example.com server earth.example.com server space.example.com So I should end up with: # server 10.33.45.3 # server ldap.example.com # server orion server fire.example.com server earth.example.com server space.example.com Please bear in mind there is a lot of other text in this file not just the above and all the other text should remain untouched. Thanks for you help in advance. Dan -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines