... of the files requiredfor the software, along with instructions for adding, removing, and upgrading those files. The RPM system also makes sure you never lose configuration files; key files are ... relevant files on yourcurrent system. Upgrades do fail on occasion.6. When performing the upgrade, watch for configuration file warnings. If yourlocal configuration files are replaced with new files, ... /proc filesystem is a Linux virtual filesystem. Virtual meansthat it doesn’t occupy real disk space. Instead, files are createdas needed. /proc is used to provide information on kernelconfiguration...