本文主要写了upstart的启动控制原理。这篇文章的目的在于可以人为的控制upstart初始的的运行等级。
此外,本文附带了大量真实的SHELL脚本文件的内容,这些内容都是服务器刚刚初始化完成后的命令,即$RUNLEVEL的的值并没有遭到任何修改。
{未完成,待续}
/etc/inint.d/rc
dgd@dgdsrv:/etc/init$ cat rc.conf
# rc - System V runlevel compatibility
#
# This task runs the old System V-style rc script when changing between
# runlevels.
description "System V runlevel compatibility"
author "Scott James Remnant <scott@netsplit.com>"
emits deconfiguring-networking
emits unmounted-remote-filesystems
start on runlevel [0123456]
stop on runlevel [!$RUNLEVEL]
export RUNLEVEL
export PREVLEVEL
console output
env INIT_VERBOSE
task
exec /etc/init.d/rc $RUNLEVEL
dgd@dgdsrv:/etc/init$
dgd@dgdsrv:/etc/init.d$ cat rcS
#! /bin/sh
#
# rcS
#
# Call all S??* scripts in /etc/rcS.d/ in numerical/alphabetical order
#
exec /etc/init.d/rc S
dgd@dgdsrv:/etc/init.d$
本文转自 urey_pp 51CTO博客,原文链接:,http://blog.51cto.com/dgd2010/728803如需转载请自行联系原作者