Re: ENV{TZ} and localtime? (inconsistent time in child script)

I started looking into this, but I hit the limit of my currently available resources. I hope to look further into this tonight. Here's what I found out so far:

POSIX::tzset is a thin wrapper for the C library function with the same name. The entirety of the XS code is:
```
void
tzset()
[download]
```
Windows and Visual Studio support tzset.
Changes to %ENV are reflected in the process's actual environment. I used Win32::ExpandEnvironmentStrings (which is mapped to a system call that knows nothing of %ENV) to verify this.

I hope to test the example code in MSDN's tzset documentation using VS6, what ActivePerl uses.

Comment on Re: ENV{TZ} and localtime? (inconsistent time in child script) Select or Download Code

Replies are listed 'Best First'.
Re^2: ENV{TZ} and localtime? (inconsistent time in child script) by blahblahblah (Priest) on Sep 07, 2007 at 00:30 UTC
Thanks, I think I found an solution in the docs you referenced for _tzset: `Use the following syntax to set the TZ environment variable: set TZ=tzn[+ \| –]hh[:mm[:ss] ][dzn] tzn Three-letter time-zone name, such as PST. You must specify the correct + offset from local time to UTC.` [download] So I tried "EST5EDT" instead of -0400, and that gives the right result. I'm still not sure why it behaves differently when called via system() though. update:used code tags so brackets in syntax aren't hidden.	[reply] [d/l]

Replies are listed 'Best First'.

Re^2: ENV{TZ} and localtime? (inconsistent time in child script)
by blahblahblah (Priest) on Sep 07, 2007 at 00:30 UTC

_tzset

Use the following syntax to set the TZ environment variable:

set TZ=tzn[+ | –]hh[:mm[:ss] ][dzn]

tzn
Three-letter time-zone name, such as PST. You must specify the correct
+ offset from local time to UTC.
[download]

update:used code tags so brackets in syntax aren't hidden.

[reply]
[d/l]