Re: [HTCondor-users] convert from 'date +"%H-%M %m-%d-%Y"' to seconds from 1970

[Gregory Thain <gthain@xxxxxxxxxxx>]

On 5/5/20 5:18 AM, Beyer, Christoph wrote:
> Hi,
>
> thanks, maybe my question was a bit misleading, I know there are a couple of ways to convert date formats into unix time and back.


Christoph:

This is one of the dusty corners of the classad language. The language 
has a separate type for Absolute and Relative time, called "abstime" and 
"reltime". You can create an absTime from a string using only one 
(sadly, united-states centric) format: YYYY-MM-DDTHH:MM"Â where T is a 
literal. So, in classads, could create an attribute with an absTime 
value like this:

cincoDeMayo = abstime("2020-05-05T10:30")


But, what you want is not the absTime type, which doesn't have many 
operations on it, but the more common Unix epoch format, seconds since 
Jan 1, 1970, or in this case (in my time zone), 1588692600. To do this 
in classads, you need to convert the absttime to an integer with a 
cast. So, try something like


CincoDeUnix = int(abstime("2020-05-05T10:30"))


-greg