如何在shell腳本的循環中執行輸入詢問工具？

Question

我試圖運行一個實用程序（nco_confpack），它直接在命令行上使用時效果很好。 但是，當我在shell腳本的while循環中使用相同的實用程序時，該實用程序在不接受任何輸入的情況下進入無限循環。 如何避免效用的無限循環？ 下面是其工作的罰款

bash-3.2$ $OMNIHOME/bin/nco_confpack -import -server SERVERA -user root -password XXXXX-select Class.list -package Class.jar 
********************************************************************* 
*       W A R N I N G       * 
*                 * 
* This action may overwrite configuration currently in your system. * 
*                 * 
* It is recommended that a backup is made of the current data  * 
* before importing new data.          * 
*                 * 
********************************************************************* 
Do you want to continue (y/n) [N]? y 
bash-3.2$ 

然而，當相同的效用被放置在while循環要繼續（Y/N）的執行代碼段電文進入一個無限循環，而不接受任何輸入

bash-3.2$ ./classInstall.sh 
Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? Do you want to continue (y/n) [N]? ^C 

我在做什麼錯在這裏？這個工具有什麼問題嗎？或者我必須明確提到腳本中的某些內容？

該腳本包含的命令就是它在有限while循環下運行的命令。

bash-3.2$vi classInstall.sh 
cat $1 | while read theLine 
do 
$OMNIHOME/bin/nco_confpack -import -server SERVERA -user root -password XXXXX-select Class.list -package Class.jar 
done 

$ 1包含兩個條目只有如此循環，命令預計運行兩次只

Answer 1

我不能完全肯定爲什麼 while循環與換行符您的公用事業供稿，但是您可以通過將預期的'y'提供給實用程序來解決問題：

cat $1 | while read theLine 
do 
    echo y | $OMNIHOME/bin/nco_confpack -import -server SERVERA -user root -password XXXXX-select Class.list -package Class.jar 
done