How can I pass to IRB if I don't specify ?

Question

Since:

irb --help

Usage: irb.rb [options] [programfile] [arguments]

---

I know I can pass arguments to ARGV if I include a prog

Answer 1

quite strange solution is to create file with variables

# defaults.rb
@a = "hello world"

And

# terminal
=> irb -r defaults.rb
irb=> @a
irb=> "hello world"