tmpfilesd
tmpfilesd is a daemon that participates in the systemd project to manage temporary files and runtime directories according to the tmpfiles.d configuration mechanism. It reads configuration files located in /usr/lib/tmpfiles.d, /run/tmpfiles.d, and /etc/tmpfiles.d and applies a set of actions at boot and, when requested, during system operation. The primary purpose is to ensure area like /tmp and /var/tmp exist with correct permissions and ownership, and to prevent accumulation of obsolete temporary files.
Configuration is provided through plain-text entries in .conf files. Each line typically specifies a path, a
tmpfilesd is usually invoked indirectly as part of the system startup sequence via systemd services such as
Security considerations include restricting operations to appropriate paths, avoiding risky changes in sensitive directories, and ensuring