Useful Commands For Ubuntu

A comprehensive list of Useful Commands For Ubuntu that we needed when using Ubuntu:

Command privileges.

sudo command – run command as root

sudo su – root shell open

sudo su user – open shell as a user

sudo -k – forget your password sudo

gksudo command – sudo visual dialog (GNOME)

kdesudo command – sudo visual dialog (KDE)

sudo visudo – edit / etc / sudoers

gksudo nautilus – root file manager (GNOME)

kdesudo konqueror – root file manager (KDE)

passwd – change your password


Command Network

ifconfig – displays information network

iwconfig – displays information from wireless

sudo iwlist scan – scan wireless networks

sudo /etc/init.d/networking restart – reset the network

(file) /etc/network/interfaces – manual configuration

ifup interface – bring online interface

ifdown interface – disable interface

Commands Display

sudo /etc/init.d/gdm restart – reset X (Gnome)

sudo /etc/init.d/kdm restart – reset X (KDE)

(file) /etc/X11/xorg.conf – show Configuration

sudo dpkg-reconfigure – reconfigure xserver-xorg-phigh – reset configuration X

Ctrl+Alt+Bksp – X display reset if frozen

Ctrl+Alt+FN – switch to tty N

Ctrl+Alt+F7 – switch back to X display

Commands Service System.

start service – service to start work (Upstart)

stop service – service to stop working (Upstart)

status service – check if service is running (Upstart)

/etc/init.d/service start – start service (SysV)

/etc/init.d/service stop – stop service (SysV)

/etc/init.d/service status – check service (SysV)

/etc/init.d/service restart – reset service (SysV)

runlevel – get current runlevel

Commands for Firewall.

ufw enable – turn on the firewall

ufw disable – turn off the firewall

ufw default allow – allow all connections by default

ufw default deny – drop all connections by default

ufw status – current rules and

ufw allow port – to allow traffic on port

ufw deny port – port block

ufw deny from ip – ip block


Command System.

lsb_release -a – get the version of Ubuntu

uname -r – get kernel version

uname -a – get all the information kernel


Commands for Package Manager.

apt-get update – refresh updates available

apt-get upgrade – update all packages

apt-get dist-upgrade – version update

apt-get install pkg – installing pkg

apt-get remove pkg – uninstall pkg

apt-get autoremove – removing packages obsotletos

apt-get -f install – try to fix packages

dpkg –configure -a – try to fix a broken package

dpkg -i pkg.deb – install file pkg.deb

(file) /etc/apt/sources.list – list of repositories APT

Special Packages For commands.

ubuntu-desktop – Setting the standard Ubuntu

kubuntu-desktop – KDE Desktop

xubuntu-desktop – desktop XFCE

ubuntu-minimal – core earnings Ubuntu

ubuntu-standard – the standard utilities Ubuntu

ubuntu-restricted-extras – not free, but useful

kubuntu-restricted-extras – ditto KDE

xubuntu-restricted-extras – ditto XFCE

build-essential – packages used to compile

linux-image-generic – latest generic kernel image

linux-headers-generic – latest headlines

Applications commands.

nautilus – File Manager (GNOME)

dolphin – File Manager (KDE)

konqueror – Web browser (KDE)

kate – text editor (KDE)

gedit – text editor (GNOME)

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