In Ubuntu 11.10 it was possible to type restart or shutdown in dash, so you could drag that icon in the left panel. Now in the new 12.04 this option has been deleted/removed. Is there another way to get those icons back?
5 Answers
One solution is to create two .desktop files in your home folder ~/.local/share/applications with the 11.10 restart and shutdown equivalent files.
Create a text file named as below in the folder. Repeat this for the second desktop file.
Dash will automatically display restart and shutdown when you type these into dash.
step by step
Open a terminal and copy and paste the following one line at a time
mkdir -p ~/.local/share/applications
gedit ~/.local/share/applications/indicator-session-restart.desktop
Copy and paste the text below for indicator-session-restart.desktop starting from [Desktop Entry] and ending X-Ubuntu-Gettext-Domain=indicator-session
Save and close.
gedit ~/.local/share/applications/indicator-session-shutdown.desktop
Copy and paste the text below for indicator-session-shutdown.desktop starting from [Desktop Entry] and ending X-Ubuntu-Gettext-Domain=indicator-session
Save and close.
indicator-session-restart.desktop
[Desktop Entry]
Name=Restart
TryExec=/usr/lib/indicator-session/gtk-logout-helper
Exec=/usr/lib/indicator-session/gtk-logout-helper --restart
Icon=system-restart
Terminal=false
Type=Application
OnlyShowIn=Unity;
Categories=System;
Version=1.0
X-Ubuntu-Gettext-Domain=indicator-session
indicator-session-shutdown.desktop
[Desktop Entry]
Name=Shut Down
TryExec=/usr/lib/indicator-session/gtk-logout-helper
Exec=/usr/lib/indicator-session/gtk-logout-helper --shutdown
Icon=system-shutdown
Terminal=false
Type=Application
OnlyShowIn=Unity;
Categories=System;
Version=1.0
X-Ubuntu-Gettext-Domain=indicator-session
- 174,526
Press Alt don't hold it, this brings up HUD type Shut Down press Enter you may find restart on that . That is the easy solution :)

- 21,407
To save space I combined all three actions into one launcher:
[Desktop Entry]
Name=Log Out
TryExec=/usr/lib/indicator-session/gtk-logout-helper
Exec=/usr/lib/indicator-session/gtk-logout-helper --logout
Icon=system-shutdown
Terminal=false
Type=Application
OnlyShowIn=Unity;
Categories=System;
Version=1.0
X-Ubuntu-Gettext-Domain=indicator-session
Actions=Restart;ShutDown;
Name[en_US]=Log Out
[Desktop Action ShutDown]
Name=Shut Down
Exec=/usr/lib/indicator-session/gtk-logout-helper --shutdown
OnlyShowIn=Unity;
[Desktop Action Restart]
Name=Restart
Exec=/usr/lib/indicator-session/gtk-logout-helper --restart
OnlyShowIn=Unity;
- 31
Here's the update file for "Trusty Tahr"
[Desktop Entry]
Name=Log Out
Exec=dbus-send --session --type=method_call --print-reply --dest=org.gnome.SessionManager /org/gnome/SessionManager "org.gnome.SessionManager.Logout" uint32:1
Icon=system-shutdown
Terminal=false
Type=Application
OnlyShowIn=Unity;
Categories=System;
Version=2.0
X-Ubuntu-Gettext-Domain=gdm
Actions=Restart;Suspend;ShutDown;
Name[en_US]=Log Out
[Desktop Action Restart]
Name=Restart
Exec=dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 "org.freedesktop.login1.Manager.Reboot" boolean:true
OnlyShowIn=Unity;
[Desktop Action Suspend]
Name=Suspend
Exec=dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 "org.freedesktop.login1.Manager.Suspend" boolean:true
OnlyShowIn=Unity;
[Desktop Action ShutDown]
Name=Shut Down
Exec=dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 "org.freedesktop.login1.Manager.PowerOff" boolean:true
OnlyShowIn=Unity;
Source: forum.ubuntu-fr.org
On Ubuntu 14.04 I had to change the Exec= line for shut down to
Exec=dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 "org.freedesktop.login1.Manager.PowerOff" boolean:true
as in askubuntu.com-What command is executed when shutdown from the graphical menu in 14.04?