Grex Info Conference

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Grex Info Item 186: Who has been logged in?
Entered by rcurl on Sat Nov 19 03:30:47 UTC 1994:

I was asked if it is possible to see a list of those that were logged
on between 2:30 and 3:30 pm, on Friday, 18 November. The person
wanted to recall who they talked with. Is this information accessible?

6 responses total.

#1 of 6 by srw on Sat Nov 19 03:53:35 1994:

They could type !last and sift through it.

#2 of 6 by rcurl on Sat Nov 19 04:53:15 1994:

Wow! That sure does it. I think that this may be an example of a
command that has to be learned by asking, not by searching. It is
also an example of a command that behaves differently in picospan
and unix (just last, that is). This is one for the compiled and
categorized "info" book.

#3 of 6 by davel on Sat Nov 19 13:12:01 1994:

The info, obviously, is only as good as the file it's kept in (wtmp, I
think), & there have been problems.  For a *long* time it went back to
the beginning of Grex (or so); then something reached a point where last
started having problems with that, & it was restarted.  I think for a
while it was being restarted regularly, and that later someone messed with
it.

Secondly, we have a **lot** of users, and so it's not too practical to look
back more than a day or two by hand.  You can pipe the output of last into
an awk script or something similar to pull out the ones you need.

#4 of 6 by kentn on Sat Nov 19 19:05:32 1994:

I pipe the output through 'grep' and it works quite nicely.

#5 of 6 by popcorn on Mon Nov 21 07:20:37 1994:

This response has been erased.

#6 of 6 by scg on Tue Nov 22 03:23:53 1994:

You can also do "last -number" where number is the number of lines you want
to see before last quits.

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