Bash

only started learning bash so would like some help please

I want to make an performance feedback form for staff.
with 4 options..

eg.. when user select option 1

the enter a user id
i then need to check if the id exits
if yes
then
i print out the line in my file containg that userid(whole line) all details

if no
print no such user
and i keep asking until i get a correct id

---------- Post updated at 08:39 PM ---------- Previous update was at 08:37 PM ----------

also i have my case statement for the options

dont need help with that just the other parts

We'll need more details. What do you need help with? If it's checking against user id's, we'll need to know how. What file, what format is that file? Are you willing to show us what you have done...?