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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 SUSE

libgphoto2_port

LIBGPHOTO2_PORT(3)					  The gPhoto2 Reference (the man					LIBGPHOTO2_PORT(3)

NAME

       libgphoto2_port - cross-platform port access library

SYNOPSIS

       #include <gphoto2/gphoto2_port.h>

DESCRIPTION

       The libgphoto2_port library was written to provide libgphoto2(3) with a generic way of accessing ports. In this function, libgphoto2_port
       is the successor of the libgpio library.

       Currently, libgphoto2_port supports serial (RS-232) and USB connections, the latter requiring libusb to be installed.

       The autogenerated API docs will be added here in the future.

ENVIRONMENT VARIABLES

       IOLIBS If set, defines the directory where the libgphoto2_port library looks for its I/O drivers (iolibs). You only need to set this on
	      OS/2 systems and broken/test installations.

       LD_DEBUG
	      Set this to all to receive lots of debug information regarding library loading on ld based systems.

       USB_DEBUG
	      If set, defines the numeric debug level with which the libusb library will print messages. In order to get some debug output, set it
	      to 1.

SEE ALSO

       libgphoto2(3), The gPhoto2 Manual, [1]gphoto website, automatically generated API docs, [2]libusb website

AUTHOR

       The gPhoto2 Team.
       Hans Ulrich Niedermann <gp@n-dimensional.de>. (man page)

REFERENCES

       1. gphoto website
	  http://www.gphoto.org/

       2. libusb website
	  http://libusb.sourceforge.net/

								    08/16/2006							LIBGPHOTO2_PORT(3)
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