launchd(8) BSD System Manager's Manual launchd(8)

NAME
     llaauunncchhdd - System wide and per-user daemon/agent manager

SYNOPSIS
     llaauunncchhdd [-dd] [-vv] [-ss] [-xx] [- command [args ...]]

DESCRIPTION
     llaauunncchhdd manages daemons, both for the system as a whole and for individ-
     ual users. Ideal daemons can launch on demand based on criteria specified
     in their respective XML property lists located in one of the directories
     specified in the FILES section.

     When run with a command, a specific instance of llaauunncchhdd is created and
     the command is implicitly added to the list of jobs maintained by
     llaauunncchhdd.  If the command exits, that instance of llaauunncchhdd will clean up
     all jobs maintained by itself and exit. All children of the command will
     use that instance of llaauunncchhdd.

     During boot llaauunncchhdd is invoked by the kernel to run as the first process
     on the system and to further bootstrap the rest of the system.

OOPPTTIIOONNSS WWHHEENN RRUUNN AASS PPIIDD 11
     -dd       Daemonize. Useful when passing a command to launchd on the com-
              mand line.

     -vv       Verbose boot.

     -ss       Single user mode. Instructs llaauunncchhdd to give a shell prompt
              before booting the system.

     -xx       Safe mode boot. Instructs the system to boot conservatively.

ENVIRONMENTAL VARIABLES     LAUNCHDSOCKET
              This variable is exported when invoking a command via the
              launchd command line. It informs launchctl how to find the cor-
              rect launchd to talk to.

NNOOTTEESS
     In Darwin it is preferable to have your daemon launch via launchd instead
     of modifying rrcc or creating a SSyysstteemmSSttaarrtteerr Startup Item.

     At some point in the future, we hope to completely phase out the use of
     rrcc.

FILES
     ~/Library/LaunchAgents         Per-user agents provided by the user.
     /Library/LaunchAgents          Per-user agents provided by the adminis-
                                    trator.
     /Library/LaunchDaemons         System wide daemons provided by the admin-
                                    istrator.
     /System/Library/LaunchAgents   Mac OS X Per-user agents.
     /System/Library/LaunchDaemons  Mac OS X System wide daemons.

SEE ALSO
     launchctl(1), launchd.plist(5), rc(8), SystemStarter(8)

Darwin                        September 30, 2004                        Darwin