11-18-2008
upon the start of a login shell, the bash will consult the below files in this order:
1. /etc/profile
2. ~.bash_profile
3. ~.bash_login
4. ~.profile
when you start a nonlogin shell, bash consults only ~bashrc.
so there is a difference between them. however, thats not to say osx is different. i'm not sure about this. this is more typical of linux/solaris.
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LEARN ABOUT DEBIAN
systemd.path
SYSTEMD.PATH(5) systemd.path SYSTEMD.PATH(5)
NAME
systemd.path - systemd path configuration files
SYNOPSIS
systemd.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 an path unit is beneath another mount point in the file system hierarchy, a dependency between both units is created automatically.
Unless DefaultDependencies= is set to false, 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 a path is already existing (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=.
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(8), systemd.unit(5), systemd.service(5), inotify(7)
AUTHOR
Lennart Poettering <lennart@poettering.net>
Developer
systemd 10/07/2013 SYSTEMD.PATH(5)