System folders
Articles of this type from all portals.
- /tmp and temporary files LinuxWhat /tmp and /var/tmp are for, when Linux cleans them, and how systemd-tmpfiles controls their age limits.
- APT package cache (apt clean and autoclean) LinuxWhere APT keeps downloaded .deb files, how apt clean, autoclean and autoremove differ, and what is safe to remove on Debian and Ubuntu.
- Driver Store (DriverStore\FileRepository) WindowsWhat the Windows Driver Store is, why it grows, and how to list and remove old driver packages safely with pnputil.
- Temporary files in Windows WindowsWhere Windows keeps temporary files (%TEMP%, C:\Windows\Temp), what is safe to delete and the supported ways to clean them.
- Windows Update cache (SoftwareDistribution) WindowsWhat the SoftwareDistribution folder holds, why Windows Update files take space, and how to clean or reset the update cache safely.
- Windows.old folder WindowsWhat the Windows.old folder is, why it appears after an upgrade, how long Windows keeps it and how to remove it safely.
- WinSxS folder (component store) WindowsWhat C:\Windows\WinSxS is, why Explorer overstates its size, and how to shrink it only with supported DISM commands.