tmpfiles.d — configuration for creation, deletion and cleaning of tmpfiles
systemd uses
/etc/tmpfiles.d/
to describe the
creation, cleaning and removal of temporary files and
directories which usually reside in
/var/run
or
/tmp
). Each configuration file
is named in the style of
/etc/tmpfiles.d/<program>.conf
The configuration format is one line per path containing action, mode, ownership and age fields:
type path mode uid gid age d /var/run/user 0755 root root 10d
The file access mode to use for this file or directory. If ommited or when set to - the default is used: 0755 for directories, 0644 for files.
The user and group to use for this file or directory. This may either be a numeric user/group ID or a user or group name. If ommited or when set to - the default 0 is used.
f
create a file if it doesn't exist yet
F
create or truncate a file
d
create a directory if it doesn't exist yet
D
create or empty a directory
x
ignore a path
r
remove a path
R
recursively remove a path
The date field, when set, is used to decide what files to delete when cleaning. If a file or directory is older than the current time minus the age field it is deleted. The field format is a series of integers each followed by one of the following postfixes for the respective time units:
s
, min
, h
, d
, w
, ms
, m
, us
If multiple integers and units are specified the time values are summed up.
The age field only applies to lines starting with d, D and x. If ommited or set to - no automatic clean-up is done.