Ruby/Development/ARGV
Материал из Wiki.crossplatform.ru
Содержание |
Assign value to ARGV
#!/usr/bin/env ruby ARGV << "myFile.txt" print while gets
Get command line input through ARGV
n = ARGV.size argstr = """ + ARGV*"," + """ puts "#{n} arguments..." puts "They are: #{argstr}" puts "Note that ARGV[0] = #{ARGV[0]}"
Ruby places parameters that are appended to the command line into a special array called ARGV.
puts ARGV.join("-") # From the command prompt, run the script like so: ruby argv.rb # The result will be blank, but then try to run it like so: ruby argv.rb test 123
The two filenames are both command line arguments
#!/usr/bin/env ruby from_filename = ARGV[0] destination_filename = ARGV[1]
