Dear All, i m running cron task in my application using whenever gem. the below code runs the rake every month. every 1.month, :at => '11:55pm' do but i want to run this rake on 1st date of every month. how can i do it. pls guide me on this.
Newb Newb wrote:
Dear All, i m running cron task in my application using whenever gem. the below code runs the rake every month. every 1.month, :at => '11:55pm' do but i want to run this rake on 1st date of every month. how can i do it. pls guide me on this.
Some one pls help me
try : 55 11 01 * *
regards
try : 55 11 01 * *
55 23 1 * * …
so you get 5 min. before midnight (not 5 min. before noon)
regards
Newb Newb wrote:
Dear All, i m running cron task in my application using whenever gem. the below code runs the rake every month. every 1.month, :at => ‘11:55pm’ do but i want to run this rake on 1st date of every month. how can i do it. pls guide me on this.
Some one pls help me
–
– David Angga Prasetya Ruby on Rails developer @ http://kiranatama.com - a Ruby on Rails outsourcing company
But to get the help that you seem to be asking for, you’ll have to give a bit more information.
Ah! I overlooked the ‘whenever’ gem. Since I found that I have that gem installed (although I can’t recall when or why), the docs are really sparse and the code doesn’t seem to know how to cope with a time or frequency option that will do what you want. In particular, lib/outputs/cron.rb says that the :at option can’t be used in this case:
every :month do command “something” end
gives:
@monthly something
but trying to get what you want with:
every :month, :at => ‘11:55pm’ do command “something” end
or even:
every :month do command “something”, :at => ‘11:55pm’ end
appears to just give (from line 41):
ArgumentError: comparison of Time with 0 failed although I would have expected (from line 42): You cannot specify an ‘:at’ when using the shortcuts for times.
I can get this error if I try something like:
every :month, :at => 1 do command “something” end or even:
every :month do command “something”, :at => 1 end
There seems to be a bug in lib/outputs/cron.rb:41 where @at > 0 appears. The @at might be a 0, but is more likely a Time returned from Chronic.parse on line 11.
Now, the particulars of using:
every :month do … end to get a crontab line with: @monthly … might not be exactly what you want since (at least on Mac OS X) the man page says:
string meaning
@monthly Run once a month, “0 0 1 * *”.
Of course, that doesn’t really get you much closer to forcing: “55 23 1 * * …”
I think that you might have to change the behavior in lib/outputs/cron.rb to shift from the "@monthly " to the "0 0 1 * * " syntax when given :at, but also probably adjust the way that the job is created and stuffed into the @jobs hash.
In the course of thinking about where and how to make the change which would permit one of the nice syntaxes above, I realized that you could say:
every 1.month, :at => Time.parse(‘01 23:55’) do command ‘something’ end since the parse_time function only looks at the #min, #hour, and #day methods of the given Time:
55 23 1 * * something
It’s a feature of Time.parse to fill-in with parts of the current date/time when bits are missing: Time.parse(‘01 23:55’)
=> Tue Dec 01 23:55:00 -0500 2009
-Rob
Rob Biedenharn
