# APT Package Manager

## Description

* APT is a package manager for Debian-based Linux systems. This provides one approach for searching, installing, and removing software.

## Repositories

{% hint style="danger" %}
Always make sure you trust any repositories added to these files!
{% endhint %}

* APT searches in package repositories for available software which is defined in the following files:
  * `/etc/apt/sources.list`
  * `/etc/apt/sources.list.s`

## Examples

```bash
# discover package source
dpkg -S /path/to/file # output provides package name
apt info <packageName> # output provides package source
```

* `sudo apt update` - Updates the local APT cache
* `sudo apt upgrade` - Installs updates for any packages found in the `update` command
* `sudo apt upgrade impacket-scripts` - Updates a single package
* `apt search impacket-scripts` - Searches for a specific package
* `apt show impacket-scripts` - View a package's description
* `sudo apt install nmap` - Installs a package
* `sudo apt remove nmap` - Uninstalls a package
* `sudo apt remove --purge nmap` - Uninstalls a package and removes any user config files