What is the difference between remove and purge?

The difference between remove and purge in the context of apt-get is as follows:

remove: This command removes the specified package from the system but leaves its configuration files intact. This means that if you reinstall the package later, it will retain the previous settings.

Example:
```
sudo apt-get remove package-name
```
purge: This command removes the specified package along with its configuration files. This is useful when you want to completely eliminate all traces of the package from your system.

Example:
```
sudo apt-get purge package-name
```

In summary, use remove if you want to keep the configuration files for future use, and use purge if you want to completely remove the package and its settings.