Runtime.getRuntime().exec()

[ajay chaturvedi]

hello,
I am using a Linux commond in the Runtime.getRuntime().exec(String) funtion which
works in the following way:
1. smbclient -M testing "enter"
(smbclient is the command, -M is the option, testing is the host/Machine to whom i want to send the mess, "enter" means hit the Enter key on keyboard).
2. Then type my message and press ctrl+d to send the message.
Because i am sending message programmatically from java. i do it the following way:
char cCtrl_d = 40;
Runtime.getRuntime().exec("smbclient -M \n My Message "+cCtrl_d);
This does not works as the actuall working of command smbclient is two part, viz;
1. smbclient -M testing "Enter"
2. My Message + ctrl+d
how do i give two-part command in sequences, to the Process?
/*
i belive Runtime.getRuntime().exec(String)creates a seperate process.
*/
looking forward to some very urgent help
ajay

[Sean MacLean]

"achaturvedi",
Thanks for participating here at the Ranch. However, the name you are using does not comply with our naming convention described at http://www.javaranch.com/name.jsp . Please log in with a new name, which meets these requirements.
You can change your name here.
Thanks.
Sean

[Dave Landers]

"MyMessage" is not part of the command, but is read by smbclient from stdin.
So exec the smbclient command, get the OutputStream from the process, which will connect you with smbclient's stdin, and write your message to that stream.

[Subhash Nambiar]

try writing ur commands in a file basically executable file and give the path of that file as parameter to the Runtime.exec(String str) method.

[Vikas Varma]

Get the OutputStream from the process(which is the stdin input of the process), using the method process.getOutputStream().
And write whatever message you need. When you call the close() method, it will be equivalent to your cntrl D
Do go through this URL javaworld which discuss about the runtime.exec() pitfalls, and ways to avoid some of the exceptions.
--Vikas

[ajay chaturvedi]

Thank you all,
above both approach work for me,
Thank you again.
ajay