Question

I’m creating a shell script to a basic program.

One option is to delete a user, but the problem is that if I search for a string that belongs to the username in question, the program will assume it as a user aswell.

For example, if I have the user adminaaa if I search for admin the program will recognize it as a user, even if “admin” is not a user.

The piece of code that I’m using is the following:

existe=`cat meusutilizadores.txt|grep "$user" |wc -l`
        if [ $existe = 1 ]
        then
            fullUser=`grep $user meusutilizadores.txt`
            passUser=$(echo $fullUser|awk -F ':' '{ print $2 }')

What I need is to be able to program it to recognize the user for his entire string, not only a part of it.

I hope I was able to express myself well enough for you to understand.
Hope you can help me.

Best regards

Answer 1

Search for the whole term only: egrep "^${user}$"

This won’t work if $user contains regex special characters like []().*+