Should the name of command line options for a program in a POSIX-style operating system be underscore-style, like
--cure_world_hunger
or maybe some other style?
--cureworldhunger
--cure-world-hunger
--cureWorldHunger
What's most common? What's better style? What's more Bash-friendly (if such a thing exist)?
Underscore is not a good idea, sometimes it gets "eaten" by a terminal border and thus look like a space.
The easiest to read, and most standard way is to use a dash/hyphen:
--cure-world-hunger