User Joker in linux/fedora

It's just a name.

Post more details, like output of

getent passwd | grep joker

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command.

below is partial output of last command

joker    pts/0        :0.0             Mon Jan 24 10:18 - 10:34 (15+00:15)
joker    pts/3        :0.0             Mon Jan 24 10:17 - 10:17  (00:00)
joker    pts/2        :0.0             Mon Jan 24 10:17 - 10:18  (00:00)
joker    pts/2        :0.0             Mon Jan 24 10:16 - 10:17  (00:00)
joker    pts/1        :0.0             Mon Jan 24 10:00 - 10:18  (00:17)
joker    pts/0        :0.0             Mon Jan 24 10:00 - 10:18  (00:18)
joker    tty7         :0               Mon Jan 24 09:59   still logged in
root     pts/3       abs19.llm.bc. Sat Jan 22 21:51 - 22:16  (00:24)
pflsml   pts/2        10.81.1.40       Sat Jan 22 21:22 - 22:16  (00:53)
pflsml   pts/2        10.81.1.40       Sat Jan 22 21:05 - 21:22  (00:17)
pflsml   pts/1        10.81.1.40       Sat Jan 22 21:02 - 22:16  (01:13)
pflsml   pts/1        10.81.1.40       Sat Jan 22 16:05 - 16:08  (00:03)
pflsml   pts/1        10.81.1.40       Sat Jan 22 16:00 - 16:04  (00:04)

it doesn't brings anything . getend command doesn't brings anything ?

That's strange, but not worrying.  Can you run

id joker

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instead?

hi svs,

yes this id command shows some results

uid=1034(joker) gid=10058(SS_TS) groups=10058(SS_TS),10005(Domain Users),100
80(SS-Tipe),10091(SS-LEA),10093(SS-DS),10094(SS-SW)

can you please explain me this as well in detail. what does it mean please?

Judging by "Domain Users", it's either LDAP or Winbind...

I am guessing the same.