Modpack Version
1.5.1

Describe the crash or bug
I'm on archlinux and I couldn't run the startserver shell script because there were carriage return characters at the end of each line. I think this is normal for files on windows but bash would give me errors when trying to run the script.
I was able to remove it with a quick tr -d '\r' < startserver.sh > output.sh.

Steps to reproduce the behavior:
Run 'startserver.sh' on linux

Crash log or latest.log.log
zsh: ./startserver.sh: bad interpreter: /bin/bash^M: no such file or directory

Saw this too late. I'll fix for 1.5.3

I know nothing about unix and commands but can you write that I can put in the actual startserver.sh script so it does this on its own when someone runs it?

you can make git do it for you :)
https://stackoverflow.com/questions/10418975/how-to-change-line-ending-settings#10419350

fixed in 1.5.5!