how to make more operation in tag?

how to make more operation in <output> tag?

References

Reference NO 1

http://stackoverflow.com/questions/15194201/how-to-make-more-operation-in-output-tag

Reference NO 2

http://www.rpm.org/max-rpm-snapshot/ch-rpm-b-command.html

Reference NO 3

http://publib.boulder.ibm.com/iseries/v5r2/ic2924/books/c092508430.htm

Reference NO 4

http://www.foobar2000.org/FAQ

Reference NO 5

http://wiki.bash-hackers.org/syntax/redirection

Reference NO 6

http://homepage.cs.uri.edu/faculty/wolfe/book/Readings/Reading06.htm

Reference NO 7

http://cnx.org/content/m35439/latest/

Reference NO 8

http://docs.oracle.com/javase/tutorial/jaxp/xslt/transformingXML.html