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Full Discussion: Getting the current time from a website and parsing date
Top Forums UNIX for Beginners Questions & Answers Getting the current time from a website and parsing date Post 303008866 by apmcd47 on Thursday 7th of December 2017 04:35:42 AM
Old 12-07-2017
Apart from why?, and assuming GNU Date is in your toolkit and assuming a modern bash, ksh or zsh:

Code:
seconds=$((  $(date -u +"(%H*60 + %M)*60 + %S" --date="$(curl -s --head web-url | sed -n 's/^Date: //p')") ))

It may take a little longer than a pure awk route and relies on date understanding the format.

Or how about
Code:
seconds=$(($(curl -s --head web-url | \
             sed -n '/^Date: / s/^.*\([0-9][0-9]\):\([0-9][0-9]\):\([0-9][0-9]\).*$/(\1*60 + \2)*60 + \3/p') ))

(pure sed but still relies on $(()) operators in shell)

Andrew
 

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LEARN ABOUT CENTOS

dm_date

DM_DATE(1)						User Contributed Perl Documentation						DM_DATE(1)

NAME

       dm_date - print out the system date and time

SYNOPSIS

       This performs the same operation as the unix 'date' command, but using the Date::Manip module.

	  dm_date [OPTION]... [+FORMAT]

DESCRIPTION

       This displays information about the current system time, or some other time. Options are:

       -h, --help
	   Print online help.

       -d STRING, --date=STRING
	   Display time described by STRING. STRING can be any string which can be parsed by Date::Manip.  Please refer to the Date::Manip::Date
	   documentation for details.

       -f DATEFILE, --file=DATEFILE
	   This reads each line in DATEFILE, and extracts a date from it and prints out the information.

	   Blank lines and lines starting with a pound (#) are ignored. Lines not containing a valid date are also ignored.

       -r FILE, --reference=FILE
	   Displays the last modification time of FILE.

       -R, --rfc-2822
	   Displayc the date and time in RFC 2822 format.

	   Example: Mon, 07 Aug 2006 12:34:56 -0600

       -u, --utc, --universal
	   Converts the date to UT (GMT) and prints out the information.

       Only one of -d, -f, or -r should be included. If more than one is included, the first one from the list (-d, -f, -r) is used and any other
       is ignored.

       The format string starts with a plus (+) and contains any of the format directives described in Date::Manip::Date.

KNOWN BUGS

       None known.

BUGS AND QUESTIONS

       Please refer to the Date::Manip::Problems documentation for information on submitting bug reports or questions to the author.

SEE ALSO

       Date::Manip::Date

LICENSE

       This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

       Sullivan Beck (sbeck@cpan.org)

perl v5.16.3							    2014-06-09								DM_DATE(1)
All times are GMT -4. The time now is 03:21 AM.
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