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Linux Command Line version 1.4
Last modified date: 2008-11-15
Created Date: 2008-01-06

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Networking (LAN / WiFi)

View the commands list divided into arguments

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Command

Description

dhclient eth0

active interface 'eth0' in dhcp mode

ethtool eth0

show network statistics of eth0

host www.example.com

lookup hostname to resolve name to ip address and viceversa

hostname

show hostname of system

ifconfig eth0

show configuration of an ethernet network card

ifconfig eth0 192.168.1.1 netmask 255.255.255.0

configure IP Address

ifconfig eth0 promisc

configure 'eth0' in promiscuous mode to gather packets (sniffing)

ifdown eth0

disable an interface 'eth0'

ifup eth0

activate an interface 'eth0'

ip link show

show link status of all network interfaces

iwconfig eth1

show wireless networks

iwlist scan

wifi scanning to display the wireless connections available

mii-tool eth0

show link status of 'eth0'

netstat -tup

show all active network connections and their PID

netstat -tupl

show all network services listening on the system and their PID

netstat -rn

show routing table alike "route -n"

nslookup www.example.com

lookup hostname to resolve name to ip address and viceversa

route -n

show routing table

route add -net 0/0 gw IP_Gateway

configure default gateway

route add -net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1

configure static route to reach network '192.168.0.0/16'

route del 0/0 gw IP_gateway

remove static route

echo "1" > /proc/sys/net/ipv4/ip_forward

activate ip routing temporarily

tcpdump tcp port 80

show all HTTP traffic

whois www.example.com

lookup on Whois database

Commands by Argument

System information - Shutdown, Restart and Logout of a system - Files and Directory - File search - Mounting a Filesystem - Disk Space - Users and Groups - Permits on Files - Special Attributes on files - Archives and compressed files - RPM Packages ( Fedora, Red Hat and like) - YUM packages tool (Fedora, RedHat and alike) - DEB packages (Debian, Ubuntu and like) - APT packages tool (Debian, Ubuntu and alike) - View file content - Text Manipulation - Character set and Format file conversion - Filesystem Analysis - Format a Filesystem - Filesystem SWAP - Backup - CDROM - Networking (LAN / WiFi) - Microsoft Windows networks (samba) - IPTABLES (firewall) - Monitoring and debugging - Others useful commands - Pacman packages tool (Arch, Frugalware and alike) -

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