UnixUtils not working in windows 10 64 bit OS-Need Help

 Hi,      I'm having problem with running basic commands like Grep, Sed ,Cat ,Awk etc.
I've done below things:Downloaded and installed unxutils.zip from source forge.Create the environment variable path when I type 'sed' and 'grep --help' it is working , when I used a below commandC:\Windows\System32>grep -i 'patter' filename.txtI'm getting below error: 'no such file or directory'. But that file exists on my desktop in one of the folders.I also installed wget.exe after googling but no luck.could you help with this how to make unixutils work on windows 10 64 bit OS with clear steps.Thank you.