runtime/backtick_command.rb

tests/_examples/runtime/backtick_command.rb in the metorex repository.

target = "world"

output = `echo hello #{target}`
p output
p $?.exitstatus
p $?.success?
p $?.exited?
p $?.stopped?
p $?.class

`exit 7`
p $?.exitstatus
p $?.success?

p Kernel.`("echo through the module")

class Command
  def to_str
    "echo coerced"
  end
end

p Kernel.`(Command.new)

begin
  `nonexistent_command_xyz 2>/dev/null`
rescue Errno::ENOENT => error
  puts error.message
end

p Kernel.private_instance_methods.include?(:`)
p :`

Output:

"hello world\n"
0
true
true
false
Process::Status
7
false
"through the module\n"
"coerced\n"
No such file or directory - nonexistent_command_xyz 2>/dev/null
true
:`