Check the concurrent user

[ust3]

If I want to know which user is concurrent login in the system ( have more than two login at the same time ) on last month , except use the command "last" then manually count it , what can I do ? thx

[skt_skt · Accepted solution]

[/root] who -a|grep kumarts|pg
kumarts console Jul 26 14:59 old 27039 system console
kumarts pts/1 Jul 31 20:31 . 5925 147.154.160.24
kumarts pts/2 Apr 13 19:45 old 13448 id= 2 term=0 exit=0
kumarts pts/5 Apr 3 09:21 old 5004 id= 5 term=0 exit=0
kumarts pts/15 Jan 23 18:48 old 17903 id= 15 term=0 exit=0
kumarts pts/20 Jul 31 17:32 12:31 6628 id= 20 term=0 exit=0
kumarts pts/24 Jul 31 18:49 old 22759 id= 24 term=0 exit=0
kumarts pts/38 Jul 25 19:07 old 18967 id= 38 term=0 exit=0
kumarts pts/41 Jul 25 18:12 old 5045 id= 41 term=0 exit=0

[ust3]

thx reply ,

I know "who" can check the user login , if I want to check all login which has concurrent login to the system on last month , can advise what can i do ? thx

[Dennis Handly]

You want to know which users were logged in more than once and any time during the last month?

Or any that are still loggged in now?

[ust3]

You want to know which users were logged in more than once and any time during the last month?

> I want to know all users who have concurrent logged in to the system ( two login at the same time )

Or any that are still loggged in now?
last month