Ideas for script to remove virus/code injection from scripts

[ranatanveer]

AOA Everyone

I need to remove virus/injections from hundereds of files from my web server, infected due to virus/injection.

i am working on simple idea.

1. script ask pattern as input from user OR pattern as input file.
2. script ask the specific path as input OR or list of infected file to be provided to remove pattern from path/list files.
3. find awk sed to remove pattern.

is there any better way ?

I can write bash script, can community help me in to give ideas about the outline of my script ?

i need just ideas not the code.