CODEWITHSUNDEEP
ruby
user2239655
user2239655

Reputation: 840

Check if ruby script finished successfully

I want to write script in ruby. I would like that script will return true or false. Is it possible? Can I return value from ruby script?

Upvotes: 0

Views: 530

Answers (3)

dddd1919
dddd1919

Reputation: 888

Run a ruby script, it will return a true/false value to tell command if it run success or fail.
At the end of you rb file, add a judge code to tell command if rb file run success:

if @success
  return true
else
  raise "RuntimeError"
end

Cover @success as you condition, when error occure, run script will return false, eles true

Upvotes: 0

awendt
awendt

Reputation: 13673

Yes! Kernel.exit takes an optional argument. Put this into exit.rb:

#!/usr/bin/env ruby
puts "Hello, world"
exit 1

Verify like so:

$ ruby exit.rb ; echo $?
Hello, world
1

Upvotes: 2

pangpang
pangpang

Reputation: 8821

Yes, you can. For ruby, the value of the last expression is the default return value.

For example:

2.1.2 :001 > def test
2.1.2 :002?>   true
2.1.2 :003?>   end
 => :test
2.1.2 :004 > test
 => true
2.1.2 :005 > def test1
2.1.2 :006?>   false
2.1.2 :007?>   end
 => :test1
2.1.2 :008 > test1
 => false
2.1.2 :009 > def test2
2.1.2 :010?>   100
2.1.2 :011?>   end
 => :test2
2.1.2 :012 > test2
 => 100

Upvotes: 0

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