When a JSP calls 'gzip -d /opt/tomcat5/3.05.tar.gz' Like this: Runtime.getRuntime().exec("gzip -d /opt/tomcat5/3.05.tar.gz'"); I get: ERROR java.io.IOException: java.io.IOException: Cannot allocate memory I don't believe it's a memory issue at all. Maybe this is just something you can't do from a jsp or servlet? Thanks alot in advance. neil