ShellScript is a ["Script"] written for the ["Shell"] (["Bash"]). They are similar to *.bat files in Windows.
The ["MIME"] type is application/x-shellscript
They are text files which first line says the shell to use (bash). So the first line is
After this, you can include comments using # in the beginning of the line. For example:
#This is a comment.
Finally, the ["Bash"] commands.