http://www.unix.com – Hi awk masters, I need help how to compare output from 'last -x' (command cli from linux) with the file1.txt. if output from last -x is there new entry, then awk write the different in the file2.txt. example: result output from " last -x |grep 'shutdown\|reboot' " : Code: [root@localhost awk]# last -x |grep 'shutdown\|reboot' reboot system boot 2.6.18-194.el5 Mon Jul 16 19:26 (00:09) shutdown system down 2.6.18-194.el5 Mon Jul 16 03:36 - 19:36 (16:00) reboot system boot (HowTos)