The differences between the autoclean, clean, and autoremove commands of apt-get are summarized as follows: apt-get autoclean: www.2cto.com if your hard disk space is small, you can regularly run this program to delete the software package. the deb Installation File is deleted from the hard disk. If you still need hard disk space, try apt-get clean. This will delete the installation packages of your installed software packages. Of course, these packages are useless in most cases, therefore, this is a good way to store the hard disk. Apt-get clean: similar to the preceding command, but it deletes all packages in the package cache. This is a good practice, because these packages are useless in most cases. But if you use dial-up Internet access, You have to reconsider. Apt-get autoremove: delete a software package that is installed to meet the requirements of other software packages, but is no longer needed. Www.2cto.com other: apt-get remove package name: Delete the Installed Package (keep the configuration file ). Apt-get -- purge remove package name: Delete the installed package (the configuration file is not retained ).