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SYSTEMD.PATH(5)                            systemd.path                           SYSTEMD.PATH(5)



NAME
       systemd.path - Path unit configuration

SYNOPSIS
       path.path

DESCRIPTION
       A unit configuration file whose name ends in ".path" encodes information about a path
       monitored by systemd, for path-based activation.

       This man page lists the configuration options specific to this unit type. See
       systemd.unit(5) for the common options of all unit configuration files. The common
       configuration items are configured in the generic [Unit] and [Install] sections. The path
       specific configuration options are configured in the [Path] section.

       For each path file, a matching unit file must exist, describing the unit to activate when
       the path changes. By default, a service by the same name as the path (except for the
       suffix) is activated. Example: a path file foo.path activates a matching service
       foo.service. The unit to activate may be controlled by Unit= (see below).

       Internally, path units use the inotify(7) API to monitor file systems. Due to that, it
       suffers by the same limitations as inotify, and for example cannot be used to monitor
       files or directories changed by other machines on remote NFS file systems.

       If a path unit is beneath another mount point in the file system hierarchy, a dependency
       between both units is created automatically.

       Unless DefaultDependencies=false is used, path units will implicitly have dependencies of
       type Conflicts= and Before= on shutdown.target. These ensure that path units are
       terminated cleanly prior to system shutdown. Only path units involved with early boot or
       late system shutdown should disable this option.

OPTIONS
       Path files must include a [Path] section, which carries information about the path(s) it
       monitors. The options specific to the [Path] section of path units are the following:

       PathExists=, PathExistsGlob=, PathChanged=, PathModified=, DirectoryNotEmpty=
           Defines paths to monitor for certain changes: PathExists= may be used to watch the
           mere existence of a file or directory. If the file specified exists, the configured
           unit is activated.  PathExistsGlob= works similar, but checks for the existence of at
           least one file matching the globbing pattern specified.  PathChanged= may be used to
           watch a file or directory and activate the configured unit whenever it changes. It is
           not activated on every write to the watched file but it is activated if the file which
           was open for writing gets closed.  PathModified= is similar, but additionally it is
           activated also on simple writes to the watched file.  DirectoryNotEmpty= may be used
           to watch a directory and activate the configured unit whenever it contains at least
           one file.

           The arguments of these directives must be absolute file system paths.

           Multiple directives may be combined, of the same and of different types, to watch
           multiple paths. If the empty string is assigned to any of these options, the list of
           paths to watch is reset, and any prior assignments of these options will not have any
           effect.

           If a path already exists (in case of PathExists= and PathExistsGlob=) or a directory
           already is not empty (in case of DirectoryNotEmpty=) at the time the path unit is
           activated, then the configured unit is immediately activated as well. Something
           similar does not apply to PathChanged= and PathModified=.

           If the path itself or any of the containing directories are not accessible, systemd
           will watch for permission changes and notice that conditions are satisfied when
           permissions allow that.

       Unit=
           The unit to activate when any of the configured paths changes. The argument is a unit
           name, whose suffix is not ".path". If not specified, this value defaults to a service
           that has the same name as the path unit, except for the suffix. (See above.) It is
           recommended that the unit name that is activated and the unit name of the path unit
           are named identical, except for the suffix.

       MakeDirectory=
           Takes a boolean argument. If true, the directories to watch are created before
           watching. This option is ignored for PathExists= settings. Defaults to false.

       DirectoryMode=
           If MakeDirectory= is enabled, use the mode specified here to create the directories in
           question. Takes an access mode in octal notation. Defaults to 0755.

SEE ALSO
       systemd(1), systemctl(1), systemd.unit(5), systemd.service(5), inotify(7),
       systemd.directives(7)



systemd 215                                                                       SYSTEMD.PATH(5)


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