unix /etc/passwd HowTo - Linux / Unix Q & A from nixCraft

How to check list of users in Unix

in FreeBSD, Mac OS X, UNIX last updated January 2, 2018

I am a new Unix system user. How can I view system users in Unix operating system using the command line option?

in Linux, Linux / UNIX File Formats, UNIX last updated August 2, 2017

Can you explain /etc/passwd file format for Linux and Unix-like operating systems?