w command

    w command displaying who is logged in in unix system with proccess running by their. The header shows, in this order, the current time, how long the system has been running, how many users are currently logged on, and the system load averages for the past 1, 5, and 15 minutes. Usage w [options] [user] […]

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    Yum Command

    Yum is easy command to install or update package based from RPM for Centos 5 and latest. yum is an interactive, automated update program which can be used for maintaining systems using rpm. Usage yum [options] [command] [package …] List of Command check Check for problems in the rpmdb check-update Check for available package updates […]

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