Shell Scripting for Router, Switch & FW deviation

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http://www.unix.com – Hi, I have written a script for finding deviation for router,switch &fw. It is working fine on linux server. But when I try on sunos 5.10 OS it showing "grep: illegal option -- A". I have used grep -C and grep -A. How it will work on sunos? Help me out please !! (HowTos)