Keyboard shortcuts for Synaptic

Command	Key Combination
Update the list of available packages	Ctrl + R
Open the package search dialog	Ctrl + F
Show the Properties window for the selected package	Ctrl + O
Mark the selected package(s) for installation	Ctrl + I
Mark the selected package(s) for upgrade	Ctrl + U
Mark the selected package(s) for removal	Delete
Mark the selected package(s) for complete removal	Shift + Delete
Unmark any changes to packages	Ctrl + N
Mark all possible upgrades	Ctrl + G
Force the installation of a specific version of the package	Ctrl + E
Undo the last change	Ctrl + Z
Redo the last change	Ctrl + Shift + Z
Apply all marked changes	Ctrl + P
Quit Synaptic