04-06-2009
Finding users logged on time and space useage
I need to find what users are currently logged onto the system that is easy just a simple who | awk '{ print $1 }' (thats all I need for the part), but I also need to find how long they have been logged on and the total amount of file space they are using.
Thanks in advance, I have been looking in my book/web for answers to the second parts and couldn't find any. Either that or I just overlooked it.
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How do I find this out? I have a feeling its a simple command such as who, but I just don't know what it is. I've had a search on here but either I can't put it into the right search criteria or there isn't a topic on it.
Thanks.
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WHO(1) User Commands WHO(1)
NAME
who - show who is logged on
SYNOPSIS
who [OPTION]... [ FILE | ARG1 ARG2 ]
DESCRIPTION
Print information about users who are currently logged in.
-a, --all
same as -b -d --login -p -r -t -T -u
-b, --boot
time of last system boot
-d, --dead
print dead processes
-H, --heading
print line of column headings
--ips print ips instead of hostnames. with --lookup, canonicalizes based on stored IP, if available, rather than stored hostname
-l, --login
print system login processes
--lookup
attempt to canonicalize hostnames via DNS
-m only hostname and user associated with stdin
-p, --process
print active processes spawned by init
-q, --count
all login names and number of users logged on
-r, --runlevel
print current runlevel
-s, --short
print only name, line, and time (default)
-t, --time
print last system clock change
-T, -w, --mesg
add user's message status as +, - or ?
-u, --users
list users logged in
--message
same as -T
--writable
same as -T
--help display this help and exit
--version
output version information and exit
If FILE is not specified, use /var/run/utmp. /var/log/wtmp as FILE is common. If ARG1 ARG2 given, -m presumed: 'am i' or 'mom likes' are
usual.
AUTHOR
Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report who translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
Full documentation at: <http://www.gnu.org/software/coreutils/who>
or available locally via: info '(coreutils) who invocation'
GNU coreutils 8.28 January 2018 WHO(1)