Recursively delete a line from JS files [closed]

Question

Please help me with writing a shell script that deletes line from virus JS files recursively.

String to remove: http://pastebin.com/ExjCK8GL

Answer 1

As mentioned, your question is a little vague so my response might not be the answer you're looking for. I'll make what I feel are reasonable assumptions and give it a go anyway. My assumptions: you have that "pastebin.com" string in a number of files and these files are scattered around in many different directories but under one main directory.

Go to this main directory and run:

$ perl -i.bak -ne 'print if (!m<http://pastebin.com/ExjCK8GL>)' `find . -type f -exec fgrep -l http://pastebin.com/ExjCK8GL {} \;`

This command will strip out the line and create backup versions of each modified file with a ".bak" extension. Note: this command does not care if the line in question is something like:

Watch out for the virus at http://pastebin.com/ExjCK8GL, dude!

The command above will omit any line that matches "http://pastebin.com/ExjCK8GL", regardless of where that string occurred in the line, either by itself or amongst other less virus-y strings.

If you do want to match just the lines with that string and only that string, change the command to:

$ perl -i.bak -ne 'print if (!m<http://pastebin.com/ExjCK8GL>)' `find . -type f -exec grep -l '^http://pastebin.com/ExjCK8GL$' {} \;`