[fuj1113]

我是參考鳥哥的書,但是有些不懂的地方.....
1. #1.print the program's work in your screen
echo " Now, the services of your Linux system will be detect ! "
echo " The www, ftp, ssh, and sendmail + pop3 will be detect ! "
echo " "
第3個echo的目的是什麼意思
2. #2.www
www='netstat -an|grep LISTEN|grep :80 '
if [ "$www" != ""] ; then
echo "WWW is running"
else
echo "WWW is NOT running"
fi
條件句中的 ! 是代表什麼意義

3Q......我程度有些不好所以請大家幫我一下,謝謝...