who - display who is logged in and related data(processes, boot time).
Options
| Option |
Description |
| -a |
same as -b -d –login -p -r -t -T -u |
| -b |
time of last system boot |
| -d |
dead processes |
| -l, –login |
print system login processes |
| -p |
print active processes spawned by init |
| -r |
print current runlevel |
| -t |
print last system clock change |
| -T |
add user’s message status as +, - or ? |
| -u |
list users loggin in |
| -H |
print line of column headings |
Example
Display current user info with Heading
Display all logged in users’ info
Reference