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Full Discussion: Convert Timestamp in text to Serial Date-Time
Top Forums Shell Programming and Scripting Convert Timestamp in text to Serial Date-Time Post 303013089 by Chubler_XL on Wednesday 14th of February 2018 05:40:33 PM
Old 02-14-2018
Quote:
Originally Posted by AshBax
many thanks
will speak with them.

---------- Post updated at 03:23 PM ---------- Previous update was at 01:57 PM ----------

i have code that converts from the data format mentioned into epoch.

Code:
 awk -F, '{"date +%s -d\""$1 "\""| getline dte;$1=dte}1' OFS="-500," databars_example_2.csv > databars_example_222.csv

now i just need to change epoch into serial data..... any thoughts?
If date is already adjusting correctly for your required timezone then try this:

Code:
awk -F\, '{
  secs=$1
  sub(/[+-].*/, "", secs)
  sub(/.*[.]/,"0.", secs)

  "date +%s -d\""$1"\"" | getline datespec

  UnixTime = datespec + secs
  Excel = (UnixTime / 86400) + 25569 
  printf "%0.20f\n", Excel
}' databars_example_2.csv

Otherwise calculating timezone adjust in awk:

Code:
awk -F, '{
  
  secs=$1
  sub(/[+-].*/, "", secs)
  sub(/.*[.]/,"0.", secs)

  tz = $1
  sub(/.*[+]/,"",tz)
  sub(/.*[-]/,"-",tz)
  tzadj = int(tz / 100) * 3600 + (tz % 100) * 60

  tstamp = $1
  gsub(/[-+][0-9]*$/,"",tstamp)

  "date -u +%s -d\""tstamp"\"" | getline datespec

  UnixTime = datespec + secs + tzadj
  Excel = (UnixTime / 86400) + 25569
  printf "%0.20f\n", Excel
}' databars_example_2.csv

This User Gave Thanks to Chubler_XL For This Post:
RudiC
 

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LEARN ABOUT SUNOS

volcheck

volcheck(1)							   User Commands						       volcheck(1)

NAME

       volcheck - checks for media in a drive and by default checks all floppy media

SYNOPSIS

       volcheck [-v] [-i secs] [-t secs] pathname

DESCRIPTION

       The  volcheck  utility tells Volume Management to look at each dev/pathname in sequence and determine if new media has been inserted in the
       drive.

       The default action is to volcheck all checkable media managed by volume management.

OPTIONS

       The following options are supported:

       -i secs	Set the frequency of device checking to secs seconds.  The default is 2 seconds.  The minimum frequency is 1 second.

       -t secs	Check the named device(s) for the next secs seconds.  The maximum number of seconds allowed is 28800, which is 8 hours.  The  fre-
		quency of checking is specified by -i. There is no default total time.

       -v	Verbose.

OPERANDS

       The following operands are supported:

       pathname        The path name of a media device.

EXAMPLES

       Example 1: A sample of the volcheck command.

       The following example

	       example% volcheck -v /dev/diskette
	       /dev/diskette has media

       asks Volume Management to examine the floppy drive for new media.

       The following example

	       example% volcheck -i 2 -t 600 /dev/diskette1 &

       asks Volume Management if there is a floppy in the floppy drive every 2 seconds for 600 seconds (10 minutes).

FILES

       /dev/volctl     Volume Management control port

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWvolu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       eject(1), volcancel(1), volmissing(1) rmmount(1M), vold(1M), rmmount.conf(4), vold.conf(4), attributes(5), volfs(7FS)

WARNINGS

       Due  to a hardware limitation in many floppy drives, the act of checking for media causes mechanical action in the floppy drive.   Continu-
       ous polling of the floppy drive will cause the drive to wear out. It is recommended that polling the drive only be performed during periods
       of high use.

SunOS 5.10							    21 Feb 1997 						       volcheck(1)
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