Re^3: Use 'strftime' to calculate a date/time in the Past.

[daxim]

I would rather not have to install this module

Just do it. You're not really using Perl if you refuse to take advantage of modules. Dependencies are a good thing. You're likely afraid of change and overestimating the effort of installing, but with the right knowledge and tools it's easy. I don't want to go off-topic in this thread, so open a new question if you want further advice.

Is it not possible to do it with the current way I have the command?

No, there's only one Perl module distro that accurately calculates date and time, and that's the one I named. POSIX and Time::Piece offer only crude calculation and place the burden on the implementing programmer to get the details right, which is wrong because it always results in inaccuracy.

would I have to convert the "amount of time into the past" into all seconds … then subtract them

Sounds like a plan that can't go wrong… except you neglect to account for leap seconds. The magic number 86400 you used earlier is likewise flawed due to daylight saving time changing the length of a day.

[SBECK]

  No, there's only one Perl module distro that accurately calculates date and time, and that's the one I named.

I'm going to have to disagree with you there. Date::Manip will also calculate date and time accurately.

I agree with your other points.

[mmartin]

Hey Daxim, thanks again for the reply...

Yea I agree, it was just that I didn't want to go and install this Module on 40-50 different servers
if I didn't have to. Ya know...?

But actually, now that I'm thinking about it, I believe I do have that Perl Module... I think I just forgot
to include the "use DateTime..." directive within the Perl command I was trying with your exmaple...


Anyways, thanks again for all your help!


Thanks Again,
Matt