像Nginx、MySQL等服務一樣，在后臺運行自己編寫的抓取天氣信息的Python腳本。

1.以管理員權限新建一個服務腳本文件

sudo vim /etc/init.d/weather_service

2.用下列模板修改該服務腳本文件

#!/bin/bash

### BEGIN INIT INFO

#

# Provides: weather_service

# Required-Start: $local_fs $remote_fs

# Required-Stop: $local_fs $remote_fs

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: initscript

# Description: This file should be used to construct scripts to be placed in /etc/init.d.

#

### END INIT INFO

## Fill in name of program here.

PROG="weather_service.py" ##可執行文件的名字，這里是.py腳本，記得在Python文件頭加上“#!/usr/bin/env python”就可以像運行可執行文件一樣直接運行py腳本

PROG_PATH="/service/weather/" ##可執行文件所在的目錄

PROG_ARGS="" ##程序啟動的各參數

PID_PATH="/var/run/" ##PID文件保存的路徑，用戶判斷是否服務已經啟動

start() {

if [ -e "$PID_PATH/$PROG.pid" ]; then

## Program is running, exit with error.

echo "Error! $PROG is currently running!" 1>&2

exit 1

else

## Change from /dev/null to something like /var/log/$PROG if you want to save output.

$PROG_PATH/$PROG $PROG_ARGS 2>&1 >/var/log/$PROG &

pid=`ps ax | grep -i 'weather_service.py' | sed 's/^\([0-9]\{1,\}\).*/\1/g' | head -n 1` ##過濾ps命令的結果，得到weather_service的進程ID

echo "$PROG started"

echo $pid > "$PID_PATH/$PROG.pid"

fi

}

stop() {

echo "begin stop"

if [ -e "$PID_PATH/$PROG.pid" ]; then

## Program is running, so stop it

pid=`ps ax | grep -i 'weather_service.py' | sed 's/^\([0-9]\{1,\}\).*/\1/g' | head -n 1`

kill $pid

rm -f "$PID_PATH/$PROG.pid"

echo "$PROG stopped"

else

## Program is not running, exit with error.

echo "Error! $PROG not started!" 1>&2

exit 1

fi

}

## Check to see if we are running as root first.

## Found at http://www.cyberciti.biz/tips/shell-root-user-check-script.html

if [ "$(id -u)" != "0" ]; then

echo "This script must be run as root" 1>&2

exit 1

fi

case "$1" in

start)

start

exit 0

;;

stop)

stop

exit 0

;;

reload|restart|force-reload)

stop

start

exit 0

;;

**)

echo "Usage: $0 {start|stop|reload}" 1>&2

exit 1

;;

esac

3.添加服務

sudo update-rc.d weather_service defaults

4.啟動服務

sudo service weather_service start

5.停止服務

sudo service weather_service stop

6.刪除服務

sudo update-rc.d -f weather_service defaults

最后編輯：2019-08-28作者：Searky

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