Ubuntu command for deleting the residual file of the deleted package

Soon after I started using Ubuntu, windows users will still switch the problems encountered in windows to Ubuntu. We all know that every time in Windows, the system generates a large number of system spam files. The cached files generated by installation and uninstallation are everywhere and often cannot be deleted. To make your system slower, cleanup of System junk files is essential and often required. All the cached (temporary files) and configuration files in Ubuntu are in the user. the xxx or/tmp directory will still switch the problem encountered in windows to Ubuntu shortly after Ubuntu is used. We all know that every time in windows, the system generates a large number of system spam files. The cached files generated by installation and uninstallation are everywhere and often cannot be deleted. To make your system slower, cleanup of System junk files is essential and often required. All the cached (temporary files) and configuration files in Ubuntu are in the user. in the xxx or/tmp directory Management is very convenient. The temporary files in the/tmp directory are usually automatically cleared when the system is shut down, so you don't have to worry about it.

Use the autoremove command to delete the software that has not been uninstalled:

Sutos apt-get autoremove

Run the following command to clear the residual files (configuration files) left by the deleted installation package:

Dpkg-l | grep ^ rc | awk '{print $2}' | tr ["\ n"] [""] | sudo xargs dpkg-P-

E.g .:
Deimy @ deimy-desktop :~ $ Dpkg-l | grep ^ rc | awk '{print $2}' | tr ["\ n"] [""] | sudo xargs dpkg-P-

(Reading the database... the system currently has a total of 125637 files and directories installed .)
Deleting libt1-5...
Clearing configuration file for libt1-5...
Deleting xpdf-reader...
Clearing xpdf-reader configuration file...