Ruby 中像这样的命令 %[a..z]

%i

pry(main)> %i(name)
=> [:name]

%q(name) --same to %(name)

pry(main)> %q(name yy)
=> "name yy"

%r

pry(main)> %r(name yy) 
=> /name yy/

%s

pry(main)> %s(name...)
=> :"name..."

%w

pry(main)> %w(name)
=> ["name"]

%x(pwd) -- same to `pwd` --same to system('pwd')

pry(main)> %x(pwd)
=> "/root\n"