Linux入门：uwsgi自动化脚本

#!/bin/bash
if [ ! -n "$1" ];then            #$1：指该脚本后跟的第一个参数，-n：判断$1是否为非空，！：取相反
echo "Usages: sh uwsgiC.sh [start|stop|restart]"
exit 0
fi

if [ $1 = start ];then            #如果第一个参数等于start，执行下面命令
psid = `ps aux | grep "uwsgi" | grep -v "grep" | wc -l`
#上面执行了启动之后，判断启动是否正常，grep -v过滤掉“grep”，使用wc -l查看输出几行
if [$psid -gt 4];then
echo "uwsgi is running!"
exit 0
else
/root/.pyenv/shims/uwsgi /usr/share/nginx/mysite/uwsgi.ini
echo "Start uwsgi service [OK]"
fi

elif [ $1 = stop ];then
killall -9 uwsgi
echo "Stop uwsgi service [OK]"
elif [ $1 = restart ];then
killall -9 uwsgi
/root/.pyenv/shims/uwsgi /usr/share/nginx/mysite/uwsgi.ini
echo "Restart uwsgi service [OK]"
else
echo "Usages: sh uwsgiC.sh [start|stop|restart]"
fi

#uwsgi.ini
……
pidfile = /tmp/uwsgi.pid
……

$ uwsgi --stop /tmp/uwsgi.pid
$ uwsgi --reload /tmp/uwsgi.pid