The last of Linux shell induction

How to use:

Format 1:last-n

N Specify the number of accounts, the latest first n login information (user, terminal, IP, date, time and duration)

Format 2:last-n <number of the latest account>

Purpose: In daily work, if you want to troubleshoot the most recent years who are or have logged in, learn about the information including (user, terminal, IP, date, time and duration).

Example 1: Show the top 5 accounts logged in recently

> last-5 test     pts/3         122.20.30.233    Mon oct  6 10:24   still logged in   test     pts/2        122.20.30.233     Mon oct  6 10:23   still logged in   test  & nbsp;  pts/2        122.20.30.233    Mon Oct  6 10:21-10:22  (00:00)     test     pts/1         122.20.30.233    Mon oct  6 10:18   still logged in    test     pts/1         122.20.30.233    Wed oct  1 14:59-09:49  (18:49)

> Last-n 5 Test PTS/1 122.20.30.233 Tue Oct 7 13:45 still logged in Test PTS/2 122.20.30.233 Mon Oct 6 13:35-18:14 (04:38) Test PTS/3 122.20.30.233 Mon Oct 6 10:24-11:23 (00:59) Test PTS/2 122.20.30.233 Mon Oct 6 10:23-11:23 (00:59) Test PTS/2 122.20.30.233 Mon Oct 6 10:21-10:22 (00:00)

As you can see from the above results, there is a total of 4 columns, with spaces between each column.

• 1th column: Test, which represents the user name
• The 2nd Column: psts/0, represents pseudo terminal or virtual terminal, the concrete manifestation is you open a terminal, this terminal is called pts/0, if you open a terminal again, this new terminal is called PTS/1

For example: Open the first session window (PST/1), the Second session window (PST/2), then close the second session window, then open the second session (PST/2), and open a third session Window (PST/3). such as:

• The first session of WINDOW:PST/1
• A second session WINDOW:PST/2
• A third session WINDOW:PST/3

• The 3rd column: the IP address of the user login machine
• 4th Column: Login time, exit time and duration
• If the user has logged in, but has now exited: Thu Sep 25 11:23-23:34 (2+12:11)
• If the current user is logged in, but does not exit the conversation: Sun Sep 09:52 still logged in

The last of Linux shell induction