On Wed, May 12, 2010 at 05:20:58AM +0100, hadi motamedi wrote: > If I understand correctly, you can pipe your output to: `awk '{a=$1} {if > (a > 3) print a}''. `a' is awk variable. `$1' is first column of awk > input so you probably need to change it. > > > > Thank you for your message . Yes , you are right . I really need to filter out > that CallId with number of occurances say less than three. But your command is > not getting through on my centos . Please correct me. So, read `man awk', `man sed' etc, as John R. Dennison wrote. Also perl would be excelent for this kind of stuff. -- Dominik Zyla -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 195 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20100512/bdeebf93/attachment-0005.sig>