Cannot run program crontab on windows

[sri....@in4systems.com]

Hi, I installed the whenever gem to my jruby rails application,

Gemfile:

gem 'whenever', require: false

Schedule.rb

set :output, "#{path}/log/cron.log"

set :environment, 'development'

every 1.minute do

  command "echo 'you can use raw cron syntax too'", environment => "development"

end

on the gitbash terminal(windows)

I tried, 

jruby -S whenever

* * * * * /bin/bash -l -c 'echo '\''you can use raw cron syntax too'\'' >> C:/Users/Sriganeshk/Documents/Promaster4Rails/log/cron.log 2>&1'

## [message] Above is your schedule file converted to cron syntax; your crontab file was not updated.

## [message] Run `whenever --help' for more options.

whenever --update-crontab or whenever -i

IOError: Cannot run program "crontab" (in directory "C:\Users\Sriganeshk\Documents\Promaster4Rails"): CreateProcess error=2, The system cannot find the file specified

          popen at org/jruby/RubyIO.java:4344

  write_crontab at C:/jruby-1.7.15/lib/ruby/gems/shared/gems/whenever-0.9.4/lib/whenever/command_line.rb:72

            run at C:/jruby-1.7.15/lib/ruby/gems/shared/gems/whenever-0.9.4/lib/whenever/command_line.rb:35

        execute at C:/jruby-1.7.15/lib/ruby/gems/shared/gems/whenever-0.9.4/lib/whenever/command_line.rb:6

         (root) at C:/jruby-1.7.15/lib/ruby/gems/shared/gems/whenever-0.9.4/bin/whenever:41

           load at org/jruby/RubyKernel.java:1081

         (root) at C:/jruby-1.7.15/bin/whenever:23

I dont know where I did wrong. Thanks for looking into this issue and some suggestions please.

[aaron.k...@gmail.com]

Sorry to see no activity on this question. Did you ever find an answer? I am having a similar error with JRuby.