UbuntuFAQ

How to install Steam
sudo apt-get update && sudo apt-get install steam && steam

How to use run Virtual Machines using Virt-Manager
sudo apt-get install qemu-kvm libvirt-bin virt-manager

Good tool to capture and edit screenshots
apt-get install shutter

How to Display all Startup items
Open a terminal
cd /etc/xdg/autostart/
sudo sed --in-place 's/NoDisplay=true/NoDisplay=false/g' *.desktop
gnome-session-properties
# Now in Startup Application all services will be shown
# By default the services will not show, this will allow them to displayed


How to create a file with all installed package names
sudo dpkg --get-selections | sed "s/.*deinstall//" | sed "s/install$//g" > mypackagelist.txt

How to List all Ubuntu install packages by size
dpkg-query -W --showformat='${Installed-Size}\t${Package}\n' | sort -nr | less


How to open GUI Tools as root user
First install the packages if needed
sudo apt-get install gksu
Then open the application as root user
EX)   gksu gedit

How to use Laptop Mode Tools to achieve better battery life
gksudo gedit /etc/laptop-mode/laptop-mode.conf
Look at the config file and make sure the following is set to a 1
ENABLE_LAPTOP_MODE_ON_BATTERY = 1
How to start/check to see if its currently running
sudo laptop_mode

How to update boot parameters
gksudo gedit /mnt/boot/grub/grub.cfg

How to open Ubuntu System Settings from terminal
gnome-control-center

To view ram usage:
free -m

How to free up memory by clearing cached memory
To clear cached memory:
sync
sudo su
echo 3 > /proc/sys/vm/drop_caches

Map Windows Network shares
smb://servername/c$

Run command to view memory
free -m

Folder where Applications shortcuts live
/usr/share/applications

Folder where executable live
/usr/bin/

Leave the terminal as a user, and enter the terminal as root
sudo su
 
How to open Ubuntu System Settings from terminal
gnome-control-center

How to view disk usage
df -hl

Unity freezes on Ubuntu startup using an Nvidia 8800 GTX
Enter terminal, ALT+F2, or recovery mode
sudo apt-get install nvidia-current

Example changing file permissions

chmod 750 file.txt

No Installer in Remastersys backup
#sudo apt-get install ubiquity-frontend-gtk
Then once completed
Just run ubiquity to install
#ubiquity

Remove all Ubuntu Default Games
sudo apt-get purge aisleriot gnome-sudoku mahjongg ace-of-penguins gnomine gbrainy

How to add Virt-Manager with libvirt
sudo apt-get install qemu-kvm libvirt-bin virt-manager

Difference between upgrade and dist-upgrade
Using upgrade keeps to the rule: under no circumstances are currently installed packages removed, or packages not already installed retrieved and installed.
If that's important to you, use apt-get upgrade. If you want things to "just work", you probably want apt-get dist-upgrade to ensure dependencies are resolved.

upgrade
    upgrade is used to install the newest versions of all packages
    currently installed on the system from the sources enumerated in
    /etc/apt/sources.list. Packages currently installed with new
    versions available are retrieved and upgraded; under no
    circumstances are currently installed packages removed, or packages
    not already installed retrieved and installed. New versions of
    currently installed packages that cannot be upgraded without
    changing the install status of another package will be left at
    their current version. An update must be performed first so that
    apt-get knows that new versions of packages are available.

dist-upgrade
    dist-upgrade in addition to performing the function of upgrade,
    also intelligently handles changing dependencies with new versions
    of packages; apt-get has a "smart" conflict resolution system, and
    it will attempt to upgrade the most important packages at the
    expense of less important ones if necessary. So, dist-upgrade
    command may remove some packages. The /etc/apt/sources.list file
    contains a list of locations from which to retrieve desired package
    files. See also apt_preferences(5) for a mechanism for overriding
    the general settings for individual packages.

 
How to install Unity tweak tool on Ubuntu
sudo apt-get install unity-tweak-tool 

 
How to install spotify
Open the following file as root, etc/apt/sourceslist
Add the following line to the file
deb http://repository.spotify.com stable non-free
Add Spotify Repo Key
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 94558F59
Install Packages
sudo apt-get update && sudo apt-get install spotify-client


Disable System Crash Reports
open the following file as root- /etc/default/apport

In the last line of this file, you will see the enabled=1
Change it to enabled=0

Save file and close

Reboot, or enter the following command to stop the service
sudo service apport stop


Running Ubuntu 13.10 Daily Build, want to upgrade to latest daily.
$ sudo apt-get update
$ sudo apt-get dist-upgrade

How to upgrade the an older version of Ubuntu to the current
$ sudo apt-get do-release-upgrade -d


How to view and force change CPU frequencies manual
sudo apt-get install indicator-cpufreq
indicator-cpufreq


How to add most current version of Unity Tweak Tool
sudo add-apt-repository ppa:tualatrix/ppa
sudo apt-get update
sudo apt-get install ubuntu-tweak


Screenshots using Gnome Disk Utility











How to use Wii Remote as mouse on Hall Linux
Once bluetooth applet is open and running the script below can be run to do the rest
Download Script
How to view motherboard temperature readings in Ubuntu
How to use ETTERCAP and DRIFTNET on Hall Linux
sudo apt-get install ettercap
sudo apt-get install driftnet
sudo ettercap -T -Q -M arp -i eth0 // //
Open another Terminal ( In Second terminal )
sudo driftnet -i eth0


How to get xbindkeys to work on Hall Linux

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