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When you open Startup Applications using the Unity Dash, you will notice that only applications you have added manually are displayed, other default Ubuntu startup applications are hidden. However, you can simply view and disable these default startup applications using a few commands from the terminal.

Before we start, you must be very careful when disabling default system startup applications. Only disable what you really know that is unnecessary.

Warning: Use this tip at your own risk. We are not liable to any damage that these instructions may cause to your system!

Applications started automatically after you login can be viewed as follows:

1. Open the terminal and run these two commands:

cd /etc/xdg/autostart/
ls

2. The "ls" command will list all applications started automatically after login:

$ ls
at-spi-dbus-bus.desktop
bluetooth-applet.desktop
bluetooth-applet-unity.desktop
deja-dup-monitor.desktop
gdu-notification-daemon.desktop
gnome-fallback-mount-helper.desktop
gnome-keyring-gpg.desktop
gnome-keyring-pkcs11.desktop
gnome-keyring-secrets.desktop
gnome-keyring-ssh.desktop
gnome-settings-daemon.desktop
gnome-sound-applet.desktop
gnome-user-share.desktop
gsettings-data-convert.desktop
gwibber.desktop
jockey-gtk.desktop
nautilus-autostart.desktop
nm-applet.desktop
onboard-autostart.desktop
orca-autostart.desktop
polkit-gnome-authentication-agent-1.desktop
print-applet.desktop
pulseaudio.desktop
pulseaudio-kde.desktop
telepathy-indicator.desktop
ubuntuone-launch.desktop
update-notifier.desktop
user-dirs-update-gtk.desktop
vino-server.desktop
zeitgeist-datahub.desktop

3. If you want to disable an application from loading at startup, use this command followed by the full name of the application:

sudo sed --in-place 's/NoDisplay=true/NoDisplay=false/g' app-name.desktop

Replace app-name.desktop with the name of the application you want to disable.

Here is an example:

sudo sed --in-place 's/NoDisplay=true/NoDisplay=false/g' bluetooth-applet.desktop

To disable all applications, run this command (NOT recommended):

sudo sed --in-place 's/NoDisplay=true/NoDisplay=false/g' *.desktop

That's it!

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