今天下午自己写了个临时的综合脚本，实现了几个功能：1根据PID查看该进程的相关信息；
2检查CPU的使用率；3 ssh连接某台主机；4 zabbix安装前的几个必要条件，即LNMP或LAMP的安装；5 数据库备份这个功能暂时没有实现；
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执行结果如下所示
1 pidsearch
如果该进程不存在，还是会继续跳过这次寻找
2 checkcpu
按ctrl+c可以退出该dstat命令
3 ssh连接
4 zabbix-install-test 这个因为我这台mysql服务器暂时不想要安装nginx和Apache，php这四个服务，所以该shell里的四个安装这些服务的函数暂时被我注释掉了，所以只有下面只有检测的结果
5 db-backup 这个功能暂时没法实现，估计冷备某个数据库也是需要些时间来写，所以这个地方暂时只有一条echo 打印语句
最后 想退出可以输入 exit 终止该shell脚本
最后贴上我写的脚本
#!/bin/bash
# author :trippal
# time:2020/03/12/14:29
# in ShenZhen city ,GuangDong province,China
# read -p "please input your host IPaddress that you want to connect by ssh " p
# ssh $p
ifsucess=$?
while [ $ifsucess -eq 0 ]
do
read -p " what do you want ? pidsearch ? checkcpu ? db-backup? ssh? zabbix-install-test or just exit? " p
case "$p" in
"pidsearch")
echo "pidsearch shell is running!"
read -p "请输入要查询的PID: " P
n=`ps -aux| awk '$2~/^'$P'$/{print $11}'|wc -l`
if [ $n -eq 0 ];then
echo "该PID不存在！！"
continue
fi
echo "--------------------------------"
echo "进程PID: $P"
echo "进程命令：`ps -aux| awk '$2~/^'$P'$/{print $11}'`"
echo "进程所属用户: `ps -aux| awk '$2~/^'$P'$/{print $1}'`"
echo "CPU占用率：`ps -aux| awk '$2~/^'$P'$/{print $3}'`%"
echo "内存占用率：`ps -aux| awk '$2~/^'$P'$/{print $4}'`%"
echo "进程开始运行的时刻：`ps -aux| awk '$2~/^'$P'$/{print $9}'`"
echo "进程运行的时间：`ps -aux| awk '$2~/^'$P'$/{print $10}'`"
echo "进程状态：`ps -aux| awk '$2~/^'$P'$/{print $8}'`"
echo "进程虚拟内存：`ps -aux| awk '$2~/^'$P'$/{print $5}'`"
echo "进程共享内存：`ps -aux| awk '$2~/^'$P'$/{print $6}'`"
echo "--------------------------------"
;;
"checkcpu")
echo -e "checkcpu shell is running!\n"
echo "first of all, press the button of Ctrl and c can stop this script"
echo -e "so,let us get the topic:\nnow the usage of cpu is"
dstat | awk '{print ($1+$2)/100}'
;;
"db-backup")
echo "database-backup shell is running"
;;
"exit")
echo "the shell is over,goodbye"
exit
;;
"ssh")
echo "now the service of ssh is running"
read -p "please input your host IPaddress that you want to connect by ssh " p
ssh $p
;;
"zabbix-install-test")
echo "now it is running the test of four requirement of zabbix-install"
if_soft_install()
{
n=`rpm -qa|grep -cw "$1"`
if [ $n -eq 0 ]
then
echo "$1 is not install."
yum install -y $1
else
echo "$1 installed."
echo "the version of $1 is"
echo "-------------------"
$1 -v
echo "-------------------"
fi
}
if_soft_install httpd
if_soft_install nginx
if_soft_install php
if_soft_install mysql
chk_service()
{
p_n=`ps -C "$1" --no-heading |wc -l`
if [ $p_n -eq 0 ]
then
echo "$1 not start."
fi
}
chk_service httpd
chk_service mysqld
chk_service nginx
chk_service php-fpm
;;
esac
done
echo -e "the connection to $p wasnt sucess,please check your network connection status\n"
echo "the running process of shell script is over "
给个打赏，谢谢！