ruby 证明在ruby进程中执行的系统命令将此进程作为父进程并具有其所有环境变量

Posted 2021-05-16

puts 'System variable TEST_VAR is ' +  ENV['TEST_VAR'].inspect
ENV['TEST_VAR'] = 'variable from scrip'
puts 'Now TEST_VAR is ' + ENV['TEST_VAR'].inspect
if ENV['RUBY_ENV_TEST_STATUS'].nil? # need this to avoid recursion :)
  ENV['RUBY_ENV_TEST_STATUS'] = "1" 
  puts 'running new process with system call.'
  system('ruby env_test.rb') # env_test.rb is this file
end