Grep does not print the linenumber in front of each line as per the documentation

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run a test case in Java
2. Unix4j.grep(Grep.Options.lineNumber, "sql", "QueryLog.Fri").toStdOut();

What is the expected output? What do you see instead?

It is expected to have a line number next to the output of each line

What version of the product are you using? On what operating system?
0.3
Please provide any additional information below.

Original issue reported on code.google.com by berlin.b...@gmail.com on 4 Sep 2013 at 1:40