用start-stop-daemon启动Nginx
在前面学习Ubuntu apt-get install nginx 创建的nginx启动脚本中，看到start-stop-daemon的用法。
迅速查了一下手册（用man start-stop-daemon)。这个程序用来启动和关闭系统级别的进程。
下面我用该命令启动我自己编译的nginx程序：
#!/bin/sh### BEGIN INIT INFO# Provides: nginx# Required-Start: $local_fs $remote_fs $network $syslog# Required-Stop: $local_fs $remote_fs $network $syslog# Default-Start: 2 3 4 5# Default-Stop: 0 1 6# Short-Description: starts the nginx web server# Description: starts nginx using start-stop-daemon### END INIT INFOPATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/binCARRIER_HOME=/home/dist/carrierDAEMON=$CARRIER_HOME/nginx/bin/nginxPID_FILE=$CARRIER_HOME/nginx/nginx.pidCONFIG_FILE=$CARRIER_HOME/nginx/conf/nginx.confDAEMON_OPTS="-c $CONFIG_FILE"NAME=nginxDESC=nginx# Include nginx defaults if availableif [ -f /etc/default/nginx ]; then. /etc/default/nginxfitest -x $DAEMON || exit 0set -e. /lib/lsb/init-functionstest_nginx_config() {if $DAEMON -t $DAEMON_OPTS >/dev/null 2>&1; thenreturn 0else$DAEMON -t $DAEMON_OPTSreturn $?fi}case "$1" instart)echo -n "Starting $DESC: "test_nginx_config# Check if the ULIMIT is set in /etc/default/nginxif [ -n "$ULIMIT" ]; then# Set the ulimitsulimit $ULIMITfistart-stop-daemon --start --quiet --pidfile $PID_FILE --exec $DAEMON -- $DAEMON_OPTS || trueecho "$NAME.";;stop)echo -n "Stopping $DESC: "start-stop-daemon --stop --quiet --pidfile $PID_FILE --exec $DAEMON || trueecho "$NAME.";;restart|force-reload)echo -n "Restarting $DESC: "start-stop-daemon --stop --quiet --pidfile $PID_FILE --exec $DAEMON || truesleep 1test_nginx_config# Check if the ULIMIT is set in /etc/default/nginxif [ -n "$ULIMIT" ]; then# Set the ulimitsulimit $ULIMITfistart-stop-daemon --start --quiet --pidfile $PID_FILE --exec $DAEMON -- $DAEMON_OPTS || trueecho "$NAME.";;reload)echo -n "Reloading $DESC configuration: "test_nginx_configstart-stop-daemon --stop --signal HUP --quiet --pidfile $PID_FILE --exec $DAEMON || trueecho "$NAME.";;configtest|testconfig)echo -n "Testing $DESC configuration: "if test_nginx_config; thenecho "$NAME."elseexit $?fi;;status)status_of_proc -p $PID_FILE "$DAEMON" nginx && exit 0 || exit $?;;*)echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest}" >&2exit 1;;esacexit 0