console select script for mac

gistfile1.rb

#!/usr/bin/ruby

# console record
home = ENV['HOME']
homecons = "#{home}/.console"
begin
  if File::ftype(homecons) == "directory" then
    # nothing to do
  else
    print "there is file \"#{homecons}\" : can't mkdir"
    exit
  end
rescue
  "it's first time to user this : mkdir #{homecons}"
  Dir::mkdir(homecons)
end

# get opened console
opened = Dir.entries(homecons)

# target console
devpath = "/dev/"
terms = Dir.entries(devpath).select {|path| path.match(/^tty.usbserial.*/)}

print " ### SERIAL in #{devpath} ### \n"

terms.each_with_index { |item, index|
  used = " : already opened" if opened.include? item
  print "#{index} : #{devpath}#{item} #{used}\n"
}

print"\nEnter console number [0] : "
num = gets.strip.to_i

print "YOU CHOOSE #{num} : "
term = terms[num]
if nil == term then
  print "invalid number\n"
  exit
end
print "#{devpath}#{term}\n"

print "\nEnter console baudrate [9600] : "
baudrate = gets.strip.to_i
baudrate = 9600 if baudrate == 0

print "YOU CHOOSE #{baudrate}\n"

# save console opened log
system("echo #{Process.pid} > #{homecons}/#{term}")

# open console
system("screen #{devpath}#{term} #{baudrate}");

# cleanup
system("rm #{homecons}/#{term}")
print "bye\n"