Linux SED / Bash script

[login to view URL] needs a script to see if fle has been modified. If so, the script should use SED to change it back and send me an email alerting me to the change. Your solution will be published to CPanel mailing list as I believe it has broad applicability. Final result will look like this: #!/bin/sh FLE=/usr/local/cpanel/Cpanel/NameServer/Conf/[login to view URL] S1={zone:\n\tname: "$zone"\n\tzonefile: "$[login to view URL]"\n\n} S2={zone:\n\tname: "$zone"\n\tzonefile: "$[login to view URL]"\n\tinclude: /etc/nsd/secondary\n\n} EM=admin@[login to view URL] IF $S1 is contained in $FLE cp $FLE $[login to view URL] Use sed to replace $S1 with $S2 Send email to $EM alerting admin to the change ENDIF exit