`last` is a command that shows a listing of the last logged in users.

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1answer
109 views

Sort the 'last' output by month

I know that the command last | tac is enough, but I want to do it using the sort command. I cannot sort it by column, it always sorts the first one only. Using bash on Arch Linux.
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0answers
45 views

getting last logins since $time

I want to get last logins from a certain date using last Running last -f /var/log/btmp -t 20140723123000 Always shows my whole lastb log. This: last -t 20140723123000 Shows my whole last log. ...
2
votes
1answer
66 views

'last -d' is REALLY slow

I can run the command last (and last -i) in a fraction of a second, but when I run last -d, according to my tests, it takes a whopping 5 minutes and 22 seconds. Just for reference, this is what ...
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0answers
45 views

How to get rid of `mosh` spamming `last -f /var/log/wtmp`?

Ever since I've started using mosh, I'm getting way too many entries in my /var/log/wtmp file of last(1) on a Linux box. cnst pts/8 172.56.2x.yz via Mon May 19 08:19 still logged in ...
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0answers
75 views

how to get user's last login including the year in C [closed]

I'm trying to write a program that can get the user's last login time. Then i want to do something with the data. eg. check which user havent login for 90 days. So I tried using last command. This ...
1
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2answers
68 views

Linux Last command weird output? Garbage for IP address

This was a weird output I came across. Running the "last" command gave me this output gryphon pts/0 192.168.0.108 Wed Mar 19 21:04 still logged in gryphon pts/0 s0106d850e695678 ...
2
votes
1answer
200 views

Unknown entries in Kali Linux wtmp log file

I have installed Kali Linux and I found some puzzling entries in wtmp log file. Unknown user logs in for a short while when I boot my computer or switch accounts and most of the time when I shut down. ...
3
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2answers
2k views

“Last” command: How to show latest user login?

As I know, the last command shows recent logins by all users. But my PC (CentOS) has been used for roughly a year, and there are many users logged. I tried to used the last command, but it just showed ...
1
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2answers
122 views

Wrong number of logged in users using “w”

There was a temporary network glitch and all user terminal ssh sessions were broken. Upon logging in to the CentOS server again and running the "w" command lists a higher number of users logged in ...
1
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2answers
168 views

How to tell the “last” command to read from STDIN?

SERVER:~ # zcat /var/log/wtmp-20130827.gz | last -f - last: -: No such file or directory SERVER:~ # Without uncompressing the wtmp file, how can I see the output of if it with the last command?
2
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2answers
63 views

How to detect what is causing entries in the “last” cmd's output? [duplicate]

last ... date { Sun Mar 31 12:00 date | Sun Mar 31 12:00 date { Sun Mar 31 00:00 date ...
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2answers
1k views

Meanings of the columns in “last” command

As I was investigating a server that is rebooting in a regular fashion, I started looking through the "last" utility but the problem is that I am unable to find what the columns mean exactly. I have, ...
4
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1answer
4k views

Can't explain “crash” entries in output of the 'last' command

Last shows "crash" at 12:02 and 14:18, but the system didn't stop working at that time. The reboot at 15:03, on the other hand, was to recover from an actual crash - our system stopped responding at ...
4
votes
1answer
14k views

How to know when and which user logged into the system under Mac OS X? Last is not enough!

In Mac OS X, if I don't touch it for a while, it will lock the screen and one must use password to unlock it, but this kind of log in is not recorded by last command. I want to know if anybody tried ...
2
votes
1answer
182 views

Why does `last` show '{' and '|' in the TTY field?

We recently set up a new FreeBSD 7.2 machine on March 11. When looking at last, we noticed some funny characters for the TTY field. What do these characters mean? Note that at this time, the ...
6
votes
1answer
6k views

Output of the “last” command

Can anybody explain me what is the meaning of the last column of the output of the last command? I'm particularly interested in its meaning with respect to the reboot pseudo-user. reboot system ...