asked on

Execute shell script from java

Hi I need to exectue a one line unix (solaris) shell script from my java servlet. I tried using the following code, but got a "broken pipe" IOException. Any idea? Thanks in advance

try
{
Runtime rt = Runtime.getRuntime();
Process child = rt.exec("rsh -l pgg mymachine \"/usr/local/test_ServerClient 2 10001 \"");

BufferedWriter outCommand = new BufferedWriter(new OutputStreamWriter(child.getOutputStream()));
outCommand.write("MyShellScript");
child.waitFor();
int retCode = child.exitValue();
outCommand.flush();
}
catch(InterruptedException ine)
{
System.out.println(ine.getMessage());
}
catch(IOException ie)
{
System.out.println(ie.getMessage());
}

ASKER CERTIFIED SOLUTION

CEHJ

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

javagirip

ASKER

I tried your code, but getting the following exception

java.lang.NoClassDefFoundError: adb/CommandRunner$OutErrReader

at the following line of the code

Thread err = new Thread(new OutErrReader(error));

javagirip

ASKER

Oops, I forgot to copy the inner class file, let me try now

john-at-7fff

If CEHJ's suggestions doesn't work, note that Runtime.exec() runs differently on different systems. On Solaris and AIX, you usually have to use the alternative method form, where you pass in an array:

http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html#exec(java.lang.String[],%20java.lang.String[],%20java.io.File)

(If that URL doesn't work in your browser, go to http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html and skip down to the version of exec with the signature: exec(String[] cmdarray, String[] envp)

Here's a discussion:

http://forum.java.sun.com/thread.jsp?thread=57009&forum=31&message=144444

javagirip

ASKER

IT worked.

Thanks a lot!!

CEHJ

8-)