General :: Shell: Script On Each Line In A File

So if I have a file with a list of files:

file.txt
file1.a
file2.b
file3.c

and I wanted to perform a script using a loop or recursively on each of those files, is there any way that I could do this?

I saw that xargs might be able to help me.

Here is sorta what I want to do:

Code:
#!/bin/bash

cat file.txt | xargs?? # Some commands to turn each line into a variable

for var in ${@}; do # Some way to get each of the files

# script on each file