URL: (http://www.theether.org/pssh/)
Step 1:
If you are using CentOS, make sure you download from RPMForge
# yum install pssh
Step 2:
Create a text file in which you will add IP Addresses
# touch server.txt
# vi server.txt (Add Servers IP Addresses into the server.txt)
Step 3:
# pssh -h-l -v -o