In the Linux operating system, managing users is a crucial aspect of system administration. Keeping track of users, their permissions, and activities is essential for maintaining security and ensuring the smooth functioning of the system. Linux provides various commands and tools to assist administrators in effectively checking users and managing their accounts.
One of the most fundamental commands for checking users is ‘who’, which displays a list of currently logged-in users along with information such as their usernames, terminals, and login times. The ‘w’ command provides a more detailed view, including additional information like the user’s idle time, CPU usage, and processes they are running.