So I just wanna to setup a rust server to test some stuff but I lost my previous batch file, 
So if someone could share a batch file which works you make me a happy guy after all, 

Thank you for sharing  
Big thank you for it 
sincerely 
TruxDeadnitro

I don't know what your batch file does, but here's the stuff you need:
https://developer.valvesoftware.com/wiki/SteamCMD#Windows_2
https://steamdb.info/app/258550/
https://developer.valvesoftware.com/wiki/Rust_Dedicated_Server#Installation
https://umod.org/documentation/getting-started#installation