Accounting Utilities Linux
Connect Accounting Utilities Here is a list of commands you can use to get data about user logins: who Shows a listing of currently logged-in users. w Shows who is logged on and what they are doing. last Shows a list of last logged-in users, including login time, logout time, login IP address, etc. lastb Same as last, except that by default it shows a log of the file /var/log/btmp , which contains all the bad login attempts. lastlog This command reports data maintained in /var/log/lastlog , which is a record of the last time a user logged in. ac Prints out the connect time in hours on a per-user basis or daily basis etc. This command reads /var/log/wtmp . dump-utmp Converts raw data from /var/run/utmp or /var/log/wtmp into ASCII-parsable format.