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Useful commands about files and packages on Linux Mint.

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1. For search files which are in the repository.

This means that apt-file download a package database from the internet and looks for the file there.
This means that this file I don’t need have installed.

apt-file search file

2. Allows you to find a package name in the repository.

apt-cache search package_name

3. For check which package provide /path/to/file , which you have installed.

dpkg -S /path/to/file

4. For check if package is installed.

dpkg -l name_package

5. How find path of application

5.1 Command “locate”

Command command locate is part of mlocate package.
Before first use, you need create database from root account.

updatedb

Then you can use, for example like this with grep command

locate file_name | grep /bin

5.2 Command which

If you are using firejail, the path of file may be different

which file_name

5.3 Command type

If you are using firejail, the path of file may be different

type file_name

6. How to find the repository of which a package belongs

apt policy package name