how can I know when system last rebooted?

Shell Programming and Scripting
1

hi
anyone one here for helping me? plzzzzzzzzzzzzz
I would like to know how Licensing information such as the operating system revision level and license restrictions in terms of user numbers can be seen?
and When was the system last rebooted can also be seen?

2

For last reboot, try
uptime
w
who -b
ps -fp 1

For OS revision, try:
uname -a

I don't believe that any current versions of unix have per-user license, but post the output of uname -a for a more specific reply.

3

thanks Perderabo

4

Operating system level - oslevel -r
when the system was last rebooted - last reboot | more