On Fri, Jan 16, 2004, Brett Glass wrote: >I was asked a good question today about how to do some simple tasks using >standard UNIX tools, and am curious what answers people on the list might >come up with. > >What are the simplest, most efficient ways to: > >1) Delete the Nth line from a text file? >2) Insert a specified line in a file after the Nth line, leaving the rest >of the text the same? >3) Delete the first line containing a particular string? >4) Insert a specified line after the first line containing a particular >string, leaving the rest of the file the same?
You want to do these things with the file in-place? The old fashioned way to do this is to ed or ex as an in-place upate. # first example (from memory, I would probably have to try these # to be sure they work. ed - << DONE 3d w q DONE # second ed - <<DONE 3a line to be inserted _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"