Network

Get wifi password

$ cat /etc/NetworkManager/system-connections/[SSID] | grep psk=
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List network interfaces

$ lspci | egrep -i --color 'network|ethernet'
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$ ifconfig -a
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$ ip link show
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$ lshw -class network
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$ cat /proc/net/dev
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Download file

$ wget [url]
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$ curl -O [url]
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Get information about domain

$ whois [ip]
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Ping to another device

$ ping [ip]
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Configure network interface

Show the hostname of your box

$ hostname [ip]
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Trace the path that a packet takes to its destination

$ traceroute [ip]
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Telnet connection

$ telnet [ip] [port]
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DNS lookup and display server answer

$ dig [ip]
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Release ip and get a new one from DHCP

$ dhclient -r
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List open sockets

$ netstat -l
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$ lsof -i
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