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I suppose it's a little late now, as I just decided to reboot to clear it up. I hate rebooting though, so I need to know for a future occurance...
I had an instance of root logged in, as shown from the 'who' command, that I could not account for and didn't know why it was there (had been for over a month according to the command). I read every man page I could think of, but I can't seem to determine a way to logout a logged in user, assumable by using their pts/* number or something of the sort. I was trying to break my record uptime, but this instance of root finally drove me nuts, hence the reboot.
I'm sure there's a way, if somebody could just kindly point me in the right direction...
I've no idea. The only commands I knew to get any info on the instance were users and who. I tried looking at /var/log/wtmp and /var/run/utmp (or vice versa....don't remember) but they're binaries and didn't give me much.
How would I have found that info? What other commands could I have used?
If you run "who -u" the last column will give you a PID for the login shell. If you want to see what is running in that shell then you can get a process tree with:
ps -efH
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