Call Linux command from Java Application.

[vaskarbasak]

Hi all,

i tried to run Linux command from Java Application.

Here i past my code:-

package com;

public class linux_java {
public static void main(String[] args) {
try {
String command = "cut -f 2,5 ABC/test.tab>ABC/test1.tab";
final Process process = Runtime.getRuntime().exec(command);
int returnCode = process.waitFor();
System.out.println("Return code = " + returnCode);
} catch (Exception e) {
e.printStackTrace();
}
}
}

result:
-------
Return code =1

But no new file was created.

But when i run "cut -f 2,5 ABC/test.tab>ABC/test1.tab" command from Linux terminal it's works.

please help me.

Thanks!
Vaskar

[JosAH]

When you use your terminal to run that program it's the shell that takes care
of your output redirection '>' Java just starts another process for you and that
other process doesn't know anything about output redirection. That's why you
can't find your output file (there isn't any).

Either start up your shell using Java and pass that command line to it as
arguments to your shell (check your man pages for the flags and syntax) or
read from the other process' output stream and store the output in a file yourself.

kind regards,

Jos

[vaskarbasak]

Thanks! My code is working....