#!/bin/bash #program:Usingtostudythe[if...then...fi]program #dsk2007/10/83:00 #content:Iwillusingthisprogramtoshowyousevices #1.printtheprogram''sworkinyourscreen echo "Now,the service of your Linux system will be detect!" echo "The www,ftp,ssh,and sendmail pop3 will be detect!" echo "" #2.www www=`netstat -ntlp | awk '{print $4}' | grep :80$` if [ "$www" != "" ]; then echo $www echo "WWW is runing" else echo $www echo "WWW is NOT runing" killall -9 httpd /usr/sbin/apachectl start #service httpd start fi #3.ftp ftp=`netstat -an | grep LISTEN | grep :21` if [ "$ftp" != "" ]; then echo $ftp echo "FTP is runing " else echo "FTP is not runing" killall -9 vsftpd #service vsftpd start /etc/init.d/vsftpd start fi #4.ssh ssh=`netstat -ntlp | awk '{print $4}' | grep :22$` #ssh=`netstat -an | grep LISTEN | grep :22` if [ "$ssh" != "" ]; then echo $ssh echo "SSH is running" else echo "SSH is not running" fi #5.sendmail pop3 smtp=`netstat -an | grep LISTEN | grep :25` pop3=`netstat -an | grep LISTEN | grep :110` if [ "$smtp" != "" ] && [ "$pop3" != "" ]; then echo "Send mail is OK!"
elif [ "$smtp" != "" ] && [ "$pop3" = "" ]; then echo " Send mail have some problems of your pop3!" elif [ "$smtp" = "" ] && [ "$pop3" != "" ]; then echo "Send mail have so me problems of your smtp!" else echo "Send mail is NO Trunning!" fi
