Which file typically contains user account information in Linux?

The file that typically contains user account information in Linux is /etc/passwd. This file is essential as it serves as a central repository for user account details, including usernames, user IDs (UIDs), group IDs (GIDs), home directories, and the shell that users are assigned upon login.

Each line in the /etc/passwd file corresponds to a single user account and is formatted in a specific manner, with fields separated by colons. The information in this file allows the system to authenticate users and manage user sessions properly.

The file also plays a critical role in the functioning of various system utilities, enabling actions such as user management and access control. Being a fundamental part of system security and user management, understanding the role of /etc/passwd is vital for anyone working with Linux systems.