linux sell下達測試問題

您好，誠摯的來回答您的問題 :
已經看過您的問題了:
首先幫您把程式碼，使用巢狀整理一下 :
1 #!/bin/bash
2 if ping -c1 -w2 192.168.1.1 &> /dev/null;
3 then
4 echo 'king is GOOD'
5 elif
6 grep "king" ~/maintenance.txt &> /dev/null; then
7 echo 'king is undergoing maintenance'
8 else
9 echo 'king is unexpectedly BAD!'
10 exit 1
11 fi
前面是表示 網路正常就顯示 king is GOOD，
假設 ping 不通的話，搜尋 家目錄當中的 maintenance.txt，
是否有 king 的存在，如果有顯示 king is undergoing maintenance，
(也就是意味著 king 曾經使用過...)
如果沒有在 maintenance.txt 找到 king，則顯示 king is unexpectedly BAD!
以上 AYO 阿佑

這有類似的

▶▶http://qoozoo1400703.pixnet.net/blog

你講的意思是 如果離開不是0的話 程式就會印good
就會檢查king 裡的/maintenance.txt和印出maintenance和離開

不然將會印出bad和1和離開嗎?!

If the ping statement exits with non-zero, the script will echo ...GOOD. If not, the script will check if the name "king" exits in a file ~/maintenance.txt. If so, it will echo ... maintenance and exit. Otherwise, it will echo ...BAD and exit with 1.

2010-06-10 12:38:23 補充：
Sorry about this. if the ping statement exits WITH zero then the script will echo ...GOOD. Note that ping in your script will always success and thus will echo xxx GOOD even the destination is not "pingable".