The password file /etc/passwd contains one line for each user account. The passwd files are the local source of password information.
To check the list of users on a Unix-like system, you can use the cut and /etc/passwd command as follows:
cut -d: -f1 /etc/passwd
The /etc/passwd file contains information about each user on the system, including their username. The cut command is used to extract the first field (delimited by :) from each line of the /etc/passwd file, which is the username. The output of the command is the list of usernames.