X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.service.xml;h=4c890dfb7bbff42672a66f4a00fbcf7f2baa2268;hp=da9079cbb8dfe37aafeae9c534711e7eeb50af0b;hb=92ff080be100aff15f292e2631921131c610afe7;hpb=f4e9cdbc6259237b2cb779a16e7c1aca0fd44e58
diff --git a/man/systemd.service.xml b/man/systemd.service.xml
index da9079cbb..4c890dfb7 100644
--- a/man/systemd.service.xml
+++ b/man/systemd.service.xml
@@ -377,11 +377,10 @@
For each of the specified
commands, the first argument must be
- an absolute and literal path to an
- executable. Optionally, if the
- absolute file name is prefixed with
- @, the second token
- will be passed as
+ an absolute path to an executable.
+ Optionally, if this file name is
+ prefixed with @,
+ the second token will be passed as
argv[0] to the
executed process, followed by the
further arguments specified. If the
@@ -1118,6 +1117,35 @@
command.
+
+ FileDescriptorStoreMax=
+ Configure how many
+ file descriptors may be stored in the
+ service manager for the service using
+ sd_pid_notify_with_fds3's
+ FDSTORE=1
+ messages. This is useful for
+ implementing service restart schemes
+ where the state is serialized to
+ /run and the file
+ descriptors passed to the service
+ manager, to allow restarts without
+ losing state. Defaults to 0, i.e. no
+ file descriptors may be stored in the
+ service manager by default. All file
+ descriptors passed to the service
+ manager from a specific service are
+ passed back to the service's main
+ process on the next service
+ restart. Any file descriptors passed
+ to the service manager are
+ automatically closed when POLLHUP or
+ POLLERR is seen on them, or when the
+ service is fully stopped and no job
+ queued or being executed for
+ it.
+
+
Check
@@ -1148,13 +1176,15 @@
Each command line is split on whitespace, with
the first item being the command to execute, and the
- subsequent items being the arguments. Double quotes
+ subsequent items being the arguments. Double quotes
("...") and single quotes ('...') may be used, in
which case everything until the next matching quote
- becomes part of the same argument. Quotes themselves
- are removed after parsing. In addition, a trailing
- backslash (\) may be used to merge
- lines.
+ becomes part of the same argument. C-style escapes are
+ also supported, see table below. Quotes themselves are
+ removed after parsing and escape sequences
+ substituted. In addition, a trailing backslash
+ (\) may be used to merge lines.
+
This syntax is intended to be very similar to
shell syntax, but only the meta-characters and
@@ -1168,6 +1198,10 @@
other elements of shell syntax are not
supported.
+ The command to execute must an absolute path
+ name. It may contain spaces, but control characters
+ are not allowed.
+
The command line accepts %
specifiers as described in
systemd.unit5.
@@ -1253,6 +1287,74 @@ ExecStart=/bin/echo $ONE $TWO $THREE
>/dev/null,
&, ;, and
/bin/ls.
+
+
+ C escapes supported in command lines and environment variables
+
+
+
+
+
+ Literal
+ Actual value
+
+
+
+
+ \a
+ bell
+
+
+ \b
+ backspace
+
+
+ \f
+ form feed
+
+
+ \n
+ newline
+
+
+ \r
+ carriage return
+
+
+ \t
+ tab
+
+
+ \v
+ vertical tab
+
+
+ \\
+ backslash
+
+
+ \"
+ double quotation mark
+
+
+ \'
+ single quotation mark
+
+
+ \s
+ space
+
+
+ \xxx
+ character number xx in hexadecimal encoding
+
+
+ \nnn
+ character number nnn in octal encoding
+
+
+
+