Comment by ketanmaheshwari

This pipeline may be significantly reduced by replacing cut's with awk, accommodating grep within awk and using awk's gsub in place of tr.

Example of replacing grep+cut with a single awk invokation:

    $ echo token:abc:def | grep -E ^token | cut -d: -f2
    abc
    
    $ echo token:abc:def | awk -F: '/^token/ { print $2 }'
    abc

Conditions don't have to be regular expressions. For example:

    $ echo $CSV
    foo:24
    bar:15
    baz:49
    
    $ echo $CSV | awk -F: '$2 > 20 { print $1 }'
    foo
    baz

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