Linux noob needs help with private server...

[ubai]

ServUO Version

Publish 57

Ultima Expansion

Endless Journey

Hello, I'm currently in Africa and I have terrible internet. I thought I would run a UO server offline so I have something to play in my free time. I am not a linux expert, but I have a laptop running Linux Mint. I tried to follow these instructions on the the Servuo page:

1. Starting with the `/Config` directory, find and edit `Server.cfg` to set up the essentials.
2. Go through the remaining `*.cfg` files to ensure they suit your needs.
3. OSX/Linux users may run `_makerelease`.
4. Run `ServUO`
5. ???
6. Profit!

When I ran ./_makerelease in the terminal, I got the following errors:
./_makerelease: line 4: BUILD_DIR: command not found
./_makerelease: line 4: EXENAME: command not found
./_makerelease: line 6: .PHONY:: command not found
./_makerelease: line 8: all:: command not found
./_makerelease: line 10: build:: command not found
./_makerelease: line 11: EXENAME: command not found
./_makerelease: line 11: @echo: command not found
./_makerelease: line 12: @dotnet: command not found
./_makerelease: line 13: @echo: command not found
./_makerelease: line 15: run:: command not found
./_makerelease: line 16: syntax error near unexpected token `then'
./_makerelease: line 16: ` @if [ -f "$(EXE)" ]; then \'

Can anyone explain what I did wrong, preferably in language a toddler can understand?

Thanks!