1
Q
uname -a
A
Display Linux system information
2
Q
uname -r
A
Display kernel release information
3
Q
cat /etc/redhat-release
A
Show which version of Red Hat installed
4
Q
lsb_release -a
A
Show which version of Ubuntu installed
5
Q
uptime
A
Show how long the system has been running + load
6
Q
hostname
A
Show system host name
7
Q
hostname -I
A
Display all local IP addresses of the host
8
Q
last reboot
A
Show system reboot history
9
Q
date
A
Show the current date and time
10
Q
cal
A
Show this month’s calendar
11
Q
w
A
Display who is online
12
Q
whoami
A
Who you are logged in as
