I am looking for the primary documentation for ruby functions. As in, the full documentation for the system
command.
For example, I have seen one guy who is using the system
command with redirection arguments at Running a command from Ruby displaying and capturing the output but someone else who doesn't know that this exists Getting output of system() calls in Ruby
I don't care about the answer to that specific question, but when I search https://www.ruby-lang.org/en/documentation/ which seems authoritative, all I can find are links to third party "guides" or conceptual learning resources. What I need is the ruby equivalent of PHP's function reference at https://php.net/manual/en/funcref.php Or perldoc -f
for perl.