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Top Forums Shell Programming and Scripting Convert Epoch Time to Standard Date and Time & Vice Versa Post 302285063 by KevinADC on Saturday 7th of February 2009 12:14:49 AM
Old 02-07-2009
Quote:
Originally Posted by DrivesMeCrazy
I found out that the month parameter for perl timelocal() need to "- 1".
As in Jan to specify "0", Dec to specify 11.
I got the value wrong, thats why epoch is not returning a consistent value.
Thats it. 0-11 for the months just like localtime(). Good catch.
 

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TIMEGM(3)						     Linux Programmer's Manual							 TIMEGM(3)

NAME
timegm, timelocal - inverses for gmtime and localtime SYNOPSIS
#include <time.h> time_t timelocal (struct tm *tm); time_t timegm (struct tm *tm); DESCRIPTION
The functions timelocal() and timegm() are the inverses to localtime(3) and gmtime(3). NOTES
These functions are GNU extensions. The timelocal() function is equivalent to the POSIX standard function mktime(3). There is no reason to ever use it. For a portable version of timegm(), set the TZ environment variable to UTC, call mktime() and restore the value of TZ. Something like #include <time.h> #include <stdlib.h> time_t my_timegm (struct tm *tm) { time_t ret; char *tz; tz = getenv("TZ"); setenv("TZ", "", 1); tzset(); ret = mktime(tm); if (tz) setenv("TZ", tz, 1); else unsetenv("TZ"); tzset(); return ret; } SEE ALSO
gmtime(3), localtime(3), mktime(3), tzset(3) GNU
2001-12-26 TIMEGM(3)
All times are GMT -4. The time now is 07:07 PM.
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