There are many questions about
Unable to locate package.
For example : if user try to install
package by using
apt-get then the following error shown. (Here
package is used only as example for displaying error message):
sudo apt-get install package Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package package
What does this error mean? How do I solve it?
Here provided General solution to understand and how to solve such type of error (which is helpful for new users that may unaware of repository-apt install mechanism)
Note : For resolving unmet-dependencies, visit: This question.