IMPORTANT COMMANDS OF 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

• 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 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