I want to use whenever gem to run a method every one minute. The problem is that when i try to update it (whenever -i) i get this error
The system cannot find the path specified. C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/whenever-0.9.4/lib/whenever/command_line.rb:72:
in 'popen': No such file or directory - crontab - (Errno::ENOENT)
from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/whenever-0.9.4/lib/whenever/command_line.rb:72:in 'write_crontab'
from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/whenever-0.9.4/lib/whenever/command_line.rb:35:in 'run'
from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/whenever-0.9.4/lib/whenever/command_line.rb:6:in 'execute'
from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/whenever-0.9.4/bin/whenever:41:in '<top (required)>'
from C:/Ruby21-x64/bin/whenever:23:in 'load'
from C:/Ruby21-x64/bin/whenever:23:in '<main>'
Could someone tell me what the problem is?