scheduling improvements - every <x> days or every <x> weeks

[bruce-weka]

josh/g enhancement request for scheduling: "every other week or every days" in single schedule

possibilities:
monthly schedule type:

• 'day' option within every: month schedule should allow a list, not just a single day
• or 'days' instead of 'day'
• this is easiest option, but doesn't really allow for "ever other sunday" type schedule

daily schedule type: option to specify every days

for syntax - possibilities:
'every' keyword currently allows day/list of day names or month/list of month names, and is required

• allow 'every: ' where unit is days or weeks?
• • example: every: 14 days
• • • when to start (what day, time)?
• • example every: 2 weeks
• • • when to start (this week or next, which day?)
• problem is when to start after a reboot/restart
• • need to look at prior snapshots and calculate the interval to the next one - this is different than all other schedule types - all others so far can be calculated without history. can get around this if require a start-date: mm/dd/yyyy, then it's all forward math, no history.

[simont65]

Having the possibility to enter the schedule in a format similar to the "cron" schedule would be a plus for me.