[root@NB ok]# echo chenlin|base64;echoY2hlbmxpbgo=[root@NB ok]# yum search iotopLoaded plugins: fastestmirror, refresh-packagekit, securityLoading mirror speeds from cached hostfile * base: mirrors.btte.net * extras: mirrors.btte.net * updates: mirrors.tuna.tsinghua.edu.cn============================== N/S Matched: iotop ==============================iotop.noarch : Top like utility for I/O  Name and summary matches only, use "search all" for everything.[root@NB ok]# yum install iotop