Script uses carriage return SH-1017

The script uses Windows/DOS style \r\n line terminators instead of UNIX style \n terminators. The additional \r aka ^M aka carriage return characters will be treated literally, and result in all sorts of strange bugs and messages. You can verify this with cat -v yourfile and see whether or not each line ends with a ^M.

To delete them, open the file in your editor and save the file as "Unix", "UNIX/OSX Format", :set ff=unix or similar if it supports it.

You can also use tr to do it: tr -d '\r' < badscript > goodscript

Problematic code:

$ cat -v myscript
#!/bin/sh^M
echo "Hello World"^M

Correct code:

$ cat -v myscript
#!/bin/sh
echo "Hello World"