"date" difference between FreeBSD & Linux Post: 302462196

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Top Forums Shell Programming and Scripting "date" difference between FreeBSD & Linux Post 302462196 by DGPickett on Wednesday 13th of October 2010 01:31:31 PM

10-13-2010

Registered User

-d in open source date, nice, except my date commands never have it! I took all the C date/time routines and wrote the last date time tool you will ever need:

Code:

$ tm2tm

Usage: tm2tm { -c | { - | <tm_str> } <in_fmt> } <delta> <out_fmt>
 First, gets dates and time(s):
  - when '-c' is used, from gettimeofday() (microsecond system clock)
  - when '-' is used, from the front of each line of stdin per <in_fmt>
  - else, from the front of <tm_str> per <in_fmt>
 The default year is 2000, and for other elements, minimum values.
 The <in_fmt> is either one of these or composed per strptime():
    %s       Absolute Unix time in integer seconds
    %s.%F    Unix time in integer and fractional 6 place seconds
    %s.%f    Unix time in integer and fractional 1-6 place seconds
 Modify each time by <delta>, an optionally sign, integer number,
  and optional suffix indicating the time unit (default seconds):
    Y or y   years           m        months
    D or d   days            H or h   hours
    M        minutes         S or s   seconds
 Format the time by <out_fmt>, which supports all of the strftime() values,
  plus the following:
    %s       Absolute Unix time in seconds
    %F       Fractional 6 place seconds
    %f       Fractional 1-6 place, zero suppressed seconds
 Write the converted time plus any following input data to standard out.
 For example: tm2tm '5/7/05 15:34' '%m/%d/%y %H:%M' -8h '%Y-%m-%d %r %Z'
  prints '2005-05-07 07:34:00 AM EDT'
$

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LEARN ABOUT FREEBSD

sttime

sttime(3)						    ShapeTools Toolkit Library							 sttime(3)

NAME

       stMktime, stWriteTime - date and time handling

SYNOPSIS

       #include <config.h>
       #include <sttk.h.h>

       time_tstMktime (char *string);

       char*stWriteTime (time_t date);

DESCRIPTION

       stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is
       a list of all valid formats, optional parts in brackets.

       [Tue] Jan 5[,] [19]93
		     This includes the standard asctime(3) format.

       Jan 5	     With no year given, the year defaults to the current year.

       [19]93/01/05  This notation requires month and day represented by exactly two digits.

       5.1.[19]93    This is the usual German notation.

       5.1.	     German notation referencing the current year.

       A certain time, given together with the date must always have the following form.

       hours:minutes[:seconds]
		       Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values  below
		       10 may be written as one digit numbers.

       The  time  value  may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white-
       space may be given between a field of the time value and the separating colon. The time is always considered to be local time.

       stWriteTime generates a time string similar to asctime(3) from its date argument.

SEE ALSO

       asctime(3)

BUGS

       Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure.

sttk-1.7						     Thu Jun 24 17:43:35 1993							 sttime(3)