Ubuntu Commands

Ubuntu Commands:

Command privileges
Description	Shortcut key
run command as root	sudo command
root shell open	sudo su
open shell as a user	sudo su user
forget your password sudo	sudo -k
sudo visual dialog (GNOME)	gksudo command
sudo visual dialog (KDE)	kdesudo command
edit / etc / sudoers	sudo visudo
root file manager (GNOME)	gksudo nautilus
root file manager (KDE)	kdesudo konqueror
change your password	passwd
Command Network
displays information network	ifconfig
displays information from wireless	iwconfig
scan wireless networks	sudo iwlist scan
reset the network	sudo /etc/init.d/networking restart
manual configuration	(file) /etc/network/interfaces
bring online interface	ifup interface
disable interface	ifdown interface
Commands Display
show Configuration	(file) /etc/X11/xorg.conf
reconfigure xserver-xorg-phigh - reset configuration X	sudo dpkg-reconfigure
X display reset if frozen	Ctrl+Alt+Bksp
switch to tty N	Ctrl+Alt+FN
switch back to X display	Ctrl+Alt+F7
Commands Service System
service to start work (Upstart)	start service
service to stop working (Upstart)	stop service
check if service is running (Upstart)	status service
start service (SysV)	/etc/init.d/service start
stop service (SysV)	/etc/init.d/service stop
check service (SysV)	/etc/init.d/service status
reset service (SysV)	/etc/init.d/service restart
get current runlevel	runlevel
Commands for Firewall
turn on the firewall	ufw enable
turn off the firewall	ufw disable
allow all connections by default	ufw default allow
drop all connections by default	ufw default deny
current rules and	ufw status
to allow traffic on port	ufw allow port
port block	ufw deny port
ip block	ufw deny from ip
Command System
get the version of Ubuntu	lsb_release -a
get kernel version	uname -r
get all the information kernel	uname -a