Find and remove words from files on linux

The following is very usefull in order to clean files from inwanted code inserted by hackers.

List all “htm” files contain the word “test” in folder “home”:

find /home *.*htm* -exec grep -l "test" {} \;

1	find /home .htm* -exec grep -l "test" {} \;

Remove the text between “teststart” and “testend” of all “htm” files in folder “home”:

find /home *.*htm* -type f -print0 | xargs -0 sed -i 'teststart,testend/d'

1	find /home .htm* -type f -print0 \| xargs -0 sed -i 'teststart,testend/d'