.I am just newbie about IBM after finished red hat exam I wanna joined this IBM
From what planet did you come from?
If you have finished redhat exam you wouldn't need ask a question more stupid than a hypocritical certificate that pretends to warrant as professional a newbie who cannot even install a server without begging for aid from other newbies.
This forum is intended for hands on linux users. A place where hypocrisy has no place.
I have a feeling of insecurity that in the future, when this generation of certificate-hypocrites or wannabe-professionals are caught in their linux-incompetence it will put to question the probity of linux forums.
Linux-questions encourages growth of knowledge in linux users; for users whose quest is gnu/linux, not certificates.
Pardon my tactless comment.