Hi, We had ported yast to RHEL4/OEL4 those could make widen users to experience the integrated administration tool. And Oracle Enterprise Manager could remotely operate on hosts through yast EM interface that will covert complex instructions to yast command line. The result of command will be transfered back to Oracle EM to give corresponding response. There is one important module in yast EM interface written by Bert Barbe. Some yast modules will re-directed Stderr to other place so that there is no information/results outputted after yast command is executed. SaveStderr.pm can save/restore Stderr to avoid this. A simple example for reference: import "SaveStderr"; import "xxx" //the module will re-directed Stderr to other SaveStderr::RestoreStderr(); CommandLine::Print Beside Oracle EM, it may be helpful to debug yast in command. We hope it can be merged into upstream yast so as not to keep separated one when porting yast to later RHEL. Regards, Wenji #!/usr/bin/perl -w package SaveStderr ; open OLDERR, ">&STDERR"; use strict; import YaPI; our %TYPEINFO; # return state of $use_gui BEGIN { $TYPEINFO{RestoreStderr} = ["function", "void"];} sub RestoreStderr { open STDERR, ">&OLDERR" ; } 1