try something like  
Hello all, I want to create a custom script to update our Servers iDRAC FW by calling the following command file:   PS C:\Users\Administrator\Desktop> racadm -r 100.100.xx.xx -u root -p calvin --nocertwarn update -f iDRAC-with-Lifecycle-Controller_Firmware_XXXX_WN64_x.xx.00.00_X31.EXE   How can I add more than one server? Is there any way to use a text file with the ip of the servers I want to update? thanks
Updating multiples server iDRACs firmware via Powershell