软件卸载问题：卸载软件后残留文件未清除

sudo apt remove <package_name>

sudo apt purge <package_name>

sudo apt autoremove

/var/lib/<package_name>
/var/log/<package_name>
/etc/<package_name>
/usr/local/<package_name>
/home/*/.config/<package_name>

sudo rm -rf /var/lib/<package_name>
sudo rm -rf /var/log/<package_name>
sudo rm -rf /etc/<package_name>
sudo rm -rf /usr/local/<package_name>
rm -rf ~/.config/<package_name>

find ~ -name "*<package_name>*"

rm -rf ~/.*<package_name>*
rm -rf ~/.*/*<package_name>*

sudo journalctl -xe

cat /var/log/apt/term.log 

dpkg -l | grep <package_name>

sudo dpkg -P <package_name>

sudo apt install apt-file

sudo apt-file update 

apt-file search <package_name>

sudo rm -rf <file_path>

systemctl list-unit-files | grep <package_name>

sudo systemctl disable <service_name>
sudo systemctl stop <service_name>
sudo rm -rf /etc/systemd/system/<service_name>.service
sudo systemctl daemon-reload

echo $PATH
echo $LD_LIBRARY_PATH

crontab -l | grep <package_name>

crontab -e