List IP addresses and network interfaces:

ip addr show

Assign an IP address to interface eth0:

ip address add [IP_address]

Display IP addresses of all network interfaces with:


See active (listening) ports with the netstat command:

netstat -pnltu

Show tcp and udp ports and their programs:

netstat -nutlp

Display more information about a domain:

whois [domain]

Show DNS information about a domain using the dig command:

dig [domain] 

Do a reverse lookup on domain:

dig -x host

Do reverse lookup of an IP address:

dig -x [ip_address]

Perform an IP lookup for a domain:

host [domain]

Show the local IP address:

hostname -I
wget [file_name]

Linux Keyboard Shortcuts

Kill process running in the terminal:

Ctrl + C

Stop current process:

Ctrl + Z

The process can be resumed in the foreground with fg or in the background with bg.

Cut one word before the cursor and add it to clipboard:

Ctrl + W

Cut part of the line before the cursor and add it to clipboard:

Ctrl + U

Cut part of the line after the cursor and add it to clipboard:

Ctrl + K

Paste from clipboard:

Ctrl + Y

Recall last command that matches the provided characters:

Ctrl + R

Run the previously recalled command:

Ctrl + O

Exit command history without running a command:

Ctrl + G

Run the last command again:


Log out of current session:


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