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Motivation Behind This Cheatsheet

I tried to install the jdk via

sudo apt-get install jdk

but got:

E: Couldn't find package jdk

The Cheatsheet

To install pacakges via apt, you need only type

sudo apt-get install package_name

But, what if you don't know the actual name of the package? you end up getting something like

E: Couldn't find package package_name

So, it helps if you can search the list of packages. Run

sudo apt-get update

to update the packages. Then

apt-cache search my_best_guess

and the package names containing my_best_guess will be listed. Use

apt-cache search my_best_guess |less

to show 1 page at a time if there are many listings. 'q' will exit the less displayer. Install using the approriate pacakge name.

Further Discussion

uninstall with

sudo apt-get remove pacakge_name