Mac OSX Command: launchctl
命令：launchctl这个命令用于控制OS X系统里的启动进程(launchd)的.
如果你需要实时控制launchd启动的服务的时候，可以使用这个命令控制
比如，如果你需要停止Spotlight服务，可以运行下面的命令：
launchctl unload /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
停止之后又要启动该服务，那么：
launchctl load /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
launchd是在OS X启动的时候又系统启动的，它根据自己的控制文件来启动相应的服务程序，而一般来说它的控制文件是：
$HOME/.launchd.conf 或者 /etc/launchd.conf
*****************************************
launchctl
Description: Interface with launchd
launchctl interfaces with launchd to load, unload daemons/agents and gen-
erally control launchd. launchctl supports taking subcommands on the
command line, interactively or even redirected from standard input.
These commands can be stored in $HOME/.launchd.conf or /etc/launchd.conf
to be read at the time launchd starts.
SYNOPSIS
launchctl ]
:
load paths...
:
unload [-w] paths...
:
start joblabels ...
:
stop joblabels ...
:
list
Example:
: launch spotlight daemon
launchctl load /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
: unload spotlight daemon
launchctl unload /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
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