The Linux Newbie Guide - lastlog Command

The Linux Newbie Guide

⇒

Fundamentals

lastlog - Account Login Query

The lastlog command is used to display information about the most recent logins of users on the system. This command actually reads data from the file "/var/log/lastlog," which contains user login information such as usernames, terminals, hosts, and the times of the last login.

The basic syntax of the lastlog command is: lastlog [OPTIONS]

Common options for the lastlog command are as follows:

-b、--before DATE：Display records for users who last logged in before the specified date.
-t、--time DAYS：Display records for users who last logged in within the specified number of days.
-u、--user LOGIN：isplay records for a specific user.
-h、--help：Display help information about the command.

Example:

$ lastlog -t 3 ←Display information about users' last logins within the last 3 days
Username        Port        From        Latest
root            tty2                    Thu Jun 13 05:20:40 -0400 2016
gdm             :0                      Thu Jun 13 05:20:23 -0400 2016
maori           :0                      Thu Jun 13 05:21:03 -0400 2016
jacky           tty3                    Thu Jun 13 05:20:50 -0400 2016

For more examples, refer to the provided link.