Ever run a shell script and get the following error?
# ./dosfile.sh : bad interpreter: No such file or directory
The error may look like there is a problem with your scripts SHEBANG where you specify the interpreter, so you go look and the line contains
#!/bin/bash which is correct. So then you start wondering if there is a problem with the
/bin/bash binary, and all sorts of thoughts of what would happen if
/bin/bash was missing or broken start racing through your head. Luckily though, the issue isn’t that complicated.
What are EOL characters
The issue has nothing to do with the bash binary at all, but rather the issue is with the contents of the shell script itself. The problem is specifically due to the type of end of line characters in the file. Each operating system has a specific special character that symbolizes the end of a line.
Read more at bc-log