The file is structured as a series of one-line entries, each representing a single user. Every line is divided into seven distinct fields, separated by colons: The unique string used for logging in.
The path to the user's default command-line interpreter (e.g., /bin/bash or /sbin/nologin ). The Evolution of Security /etc/passwd
The unique number the kernel uses to identify the user (e.g., 0 for root). Group ID (GID): The primary group associated with the user. The file is structured as a series of
The path where the user is placed upon login. /etc/passwd