Read the interesting fields out of the whole file

Answer

cut -d: -f1,5,6,7 /etc/passwd cut -d: -f1,3,4 /etc/passwd | head -5

`-d:` sets the delimiter to a colon and `-f` picks fields by number, so this is the password file with the noise removed. The second line is the UID/GID view: it makes the reserved system accounts at the low numbers obvious.

Sarwar & Koretsky 3e ch4 §4.4.4