exec command under Unix

From: Matthew Ogan (mattogan_at_hotmail.com)
Date: 10/30/03 

Date: Thu, 30 Oct 2003 04:58:23 GMT

I can execute commands using "Runtime.getRuntime().exec( command );" on a
Sun workstation but I cannot get a command with redirects or pipes to work
(passing the command and arguments as a string or an array of strings). I
realize that the redirect/pipe is not a command argument but I hope there is
some way to send the non-argument characters to the command prompt of the
operating system.

Maybe some examples will clarify my dilemma:

Runtime.getRuntime().exec( "ls -l"); works
Runtime.getRuntime().exec( "ls -l > junk"); does not work

String command[] = {"ls", "-l"};
Runtime.getRuntime().exec(command); works

String command[] = {"ls", "-l", ">", "junk"};
Runtime.getRuntime().exec(command); does not work

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