gawk and strftime() Post: 302192603

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Top Forums Shell Programming and Scripting gawk and strftime() Post 302192603 by ripat on Wednesday 7th of May 2008 11:26:40 AM

05-07-2008

Registered User

gawk and strftime()

Strange behaviour of the strftime() function from gawk (3.1.5):

Code:

$ awk 'BEGIN{print strftime("%T", 3600)}'
> 02:00:00

$ awk 'BEGIN{print strftime("%T", 0)}'
> 01:00:00

Obviously something with DST but I can not figure out why? To me 3600 epoch seconds remains 01:00, DST or not.

From the gawk man pages:

Code:

strftime([format [, timestamp]])
                 Formats  timestamp  according to the specification in format.  The timestamp should be of the same form
                 as returned by systime().  If timestamp is missing, the current time of day  is  used.   If  format  is
                 missing,  a  default format equivalent to the output of date(1) is used.  See the specification for the
                 strftime() function in ANSI C for the format conversions that are guaranteed to be available.   A  pub‐
                 lic-domain  version  of  strftime(3)  and a man page for it come with gawk; if that version was used to
                 build gawk, then all of the conversions described in that man page are available to gawk.

Any idea?

ripat

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igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)