Unix/Linux Go Back    

SuSE 11.3 - man page for acpid (suse section 8)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

acpid(8)										 acpid(8)

       acpid - Advanced Configuration and Power Interface event daemon

       acpid [options]

       acpid  is  designed to notify user-space programs of ACPI events.  acpid should be started
       during the system boot, and will run as a background process, by default.  It will open an
       events file (/proc/acpi/event by default) and attempt to read whole lines.  When a line is
       received (an event), acpid will examine a list of rules, and execute the rules that  match
       the   event.   acpid  will  ignore  all	incoming  ACPI	events	if  a  lock  file  exists
       (/var/lock/acpid by default).

       Rules are defined by simple configuration files.   acpid  will  look  in  a  configuration
       directory  (/etc/acpi/events  by  default),  and parse all regular files that do not begin
       with a period ('.') or end with a tilde (~).  Each file must define two things:	an  event
       and  an	action.   Any blank lines, or lines where the first character is a hash ('#') are
       ignored.  Extraneous lines are flagged as warnings, but are  not  fatal.   Each	line  has
       three tokens: the key, a literal equal sign, and the value.  The key can be up to 63 char-
       acters, and is case-insensitive (but whitespace matters).  The value  can  be  up  to  511
       characters, and is case and whitespace sensitive.

       The  event  value  is  a  regular  expression  (see  regcomp(3)), against which events are

       The action value is a commandline, which will be invoked via  /bin/sh  whenever	an  event
       matching  the  rule in question occurs.	The commandline may include shell-special charac-
       ters, and they will be preserved.  The only special characters in an action value are  "%"
       escaped.   The string "%e" will be replaced by the literal text of the event for which the
       action was invoked.  This string may contain spaces, so the commandline must take care  to
       quote  the "%e" if it wants a single token.  The string "%%" will be replaced by a literal
       "%".  All other "%" escapes are reserved, and will cause a rule to not load.

       This feature allows multiple rules to be defined for the same event (though no ordering is
       guaranteed),  as  well  as  one rule to be defined for multiple events.	To force acpid to
       reload the rule configuration, send it a SIGHUP.

       In addition to rule files,  acpid  also	accepts  connections  on  a  UNIX  domain  socket
       (/var/run/acpid.socket  by  default).   Any  application may connect to this socket.  Once
       connected, acpid will send the text of all ACPI events to the client.  The client has  the
       responsibility  of  filtering for messages about which it cares.  acpid will not close the
       client socket except in the case of a SIGHUP or acpid exiting.

       acpid will log all of its activities, as well as the stdout and stderr of any actions,  to

       All the default files and directories can be changed with commandline options.

       -c, --confdir directory
		   This  option changes the directory in which acpid looks for rule configuration
		   files.  Default is /etc/acpi/events.

       -C, --clientmax number
		   This option changes the maximum number of non-root  socket  connections  which
		   can be made to the acpid socket.  Default is 256.

       -d, --debug This  option  increases  the  acpid debug level by one.  If the debug level is
		   non-zero, acpid will run in the foreground, and will log to stderr,	in  addi-
		   tion to the regular syslog.

       -e, --eventfile filename
		   This  option changes the event file from which acpid reads events.  Default is

       -f, --foreground
		   This option keeps acpid in the foreground by not forking at startup.

       -l, --logevents
		   This option tells acpid to log information about all events and actions.

       -L, --lockfile filename
		   This option changes the lock file used to stop event processing.   Default  is

       -g, --socketgroup groupname
		   This  option  changes  the  group ownership of the UNIX domain socket to which
		   acpid publishes events.

       -m, --socketmode mode
		   This option changes the permissions of the UNIX domain socket to  which  acpid
		   publishes events.  Default is 0666.

       -s, --socketfile filename
		   This  option  changes  the  name  of the UNIX domain socket which acpid opens.
		   Default is /var/run/acpid.socket.

       -S, --nosocket filename
		   This option tells acpid not to open a UNIX domain socket.  This overrides  the
		   -s option, and negates all other socket options.

       -p, --pidfile filename
		   This option tells acpid to use the specified file as its pidfile.  If the file
		   exists, it will be removed and over-written.  Default is /var/run/acpid.pid.

       -v, --version
		   Print version information and exit.

       -h, --help  Show help and exit.

       This example - placed in /etc/acpi/events/power - will shut down your system if you  press
       the power button.

       action=/usr/local/sbin/power.sh "%e"

       The script power.sh gets called and will see the complete event string as parameter $1.

       acpid should work on any linux kernel released since 2003.


       There are no known bugs.  To file bug reports, see AUTHORS below.

       regcomp(3), sh(1), socket(2), connect(2)

       Tim Hockin <thockin@hockin.org>

Unix & Linux Commands & Man Pages : 2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 12:35 PM.