I just want to get the files from the current dir and only output .mp4 .mp3 .exe files nothing else. So I thought I could just do this:
ls | grep \\.mp4$ | g
In case you are still looking for an alternate solution:
ls | grep -i -e '\\.tcl$' -e '\\.exe$' -e '\\.mp4$'
Feel free to add more -e flags if needed.