java - 如何用java一步步执行linux shell

Question

Linux(centos 6):

第 1 步

$:yum install xxx

返回一些消息，例如

"Are you OK with your IP being logged? (Y)es/(N)o"

第 2 步

$:Y

安装正在进行。(其他命令可能有步骤 3)

但是我怎样才能用java执行这个命令呢？

这是我的java代码:

String[] commands = new String[]{"yum","install","xxx"};
Runtime run = Runtime.getRuntime();
Process pr = run.exec(commands);
Reader reader = new InputStreamReader(pr.getInputStream());
BufferedReader bf = new BufferedReader(reader);

bf 包括

"Are you OK with your IP being logged?"

现在我如何执行命令(“Y”)以便安装可以继续

请帮助我。

Answer 1

我不知道如何使用“y”(是)执行命令，但您可以按如下方式运行 yum

yum -y install xxx

-y, --assumeyes Assume yes; assume that the answer to any question which would be asked is yes. Configuration Option: assumeyes See: https://linux.die.net/man/8/yum