shell脚本实现九九乘法表

9*9乘法表

判断服务是否开启

1.查看80端口是否被监听

root@localhost \~# ss -an | grep 80

tcp LISTEN 0 128 *:80 *:*

2.查看80端口/httpd服务是否开启

root@localhost \~# netstat -lntup | grep 80
tcp6 0 0 :::80 :::* LISTEN 3204/httpd

root@localhost \~# netstat -lntup | grep httpd

tcp6 0 0 :::80 :::* LISTEN 3204/httpd

3.查看本地进程

root@localhost \~# ps -ef | grep httpd
root 3204 1 0 20:28 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 3207 3204 0 20:28 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 3208 3204 0 20:28 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 3209 3204 0 20:28 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 3210 3204 0 20:28 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
root 3537 2983 0 20:37 pts/1 00:00:00 grep --color=auto httpd