Problem while redirecting script output to a file using java

Hi All ,

I was trying to execute a unix shell script and redirect the output to a file in unix machine. When i execute the below command it is working fine


/root/umdhanas/New/hello.sh >> big.txt

But when i try to do the same using java program as below:

Runtime run=Runtime.getRuntime();
Process proc=run.exec("/root/umdhanas/New/hello.sh >> big.txt");

A file by the name big.txt does not get created and redirection does not happen . Please help me how to solve this

Also please let me know how to get the process id of the script executed from java

It is important to bear in mind that exec() does not interpret its string argument the same way a bash or other shell would. See, for example, the section "Runtime.exec() is not a command line" on page 4 of this JavaWorld article.

And that article also, conveniently, tells you how to mimic this...if I remember correctly.

That has to be one of the most viewed Java articles ever. A classic.