如何在 shell 脚本中循环执行输入询问实用程序？

Question

我正在尝试运行一个实用程序 (nco_confpack)，当直接在命令行上使用时它工作得很好。但是，当我在 shell 脚本的 while 循环中使用相同的实用程序时，该实用程序会进入无限循环而不接受任何输入。如何避免效用的无限循环？下面是运行良好的代码片段

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

但是，当同一实用程序置于 while 循环中时，Do you want to continue(y/n) 消息进入无限循环而不接受任何输入

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

我在这里做错了什么？该实用程序有问题还是我必须在脚本中明确提及某些内容？

该脚本包含相同的命令，只是它在有限的 while 循环下运行ning。

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

$1 仅包含两个条目，因此循环，并且该命令预计运行仅两次

Answer 1

我不完全确定为什么 while 循环为您的实用程序提供换行符，但您可以通过向实用程序提供预期的 'y' 来解决问题你自己：

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

如何在 shell 脚本中循环执行输入询问实用程序？

How to execute an input asking utility in a loop within a shell script?

bash

shell

while-loop

solaris-10