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Top Forums Shell Programming and Scripting parsing and calculating difference. Post 302254880 by Lakris on Wednesday 5th of November 2008 11:03:31 AM
Old 11-05-2008
Quote:
Originally Posted by meetmano143
As a start I want to get the time field into three different variables hours, minutes and seconds..

Any parsing script for that ??

Thanks
Hello!

Here's a suggestion, You can of course manipulate the read command to extract hours and minutes, etc if You like.

Assuming You have a file date.log, like You described, and it really follows a predictable format, like

Code:
Access Time: Thu Nov 6 16:43:45 2008
Modify Time: Thu Nov 6 16:43:45 2008
Change Time: Thu Nov 6 16:43:45 2008
Access Time: Thu Nov 6 16:43:52 2008
Modify Time: Thu Nov 6 16:44:01 2008
Change Time: Thu Nov 6 16:44:01 2008
Access Time: Thu Nov 6 16:48:45 2008
Modify Time: Thu Nov 6 16:48:45 2008
Change Time: Thu Nov 6 16:48:45 2008
Access Time: Thu Nov 6 17:43:45 2008
Modify Time: Thu Nov 6 17:43:45 2008
Change Time: Thu Nov 6 17:43:45 2008


Then the following snippet

Code:
#!/bin/bash
prevatime=0
echo Previous Access time is 1970"!"
while read type dummy datestring
do 
	case $type in
	Access) curatime=$(date +%s -d "$datestring");
		echo Difference from prev access time is \
		$(((curatime-prevatime)/60)) minutes and \
		$(((curatime-prevatime)%60)) seconds;;
	Modify) ;;
	Change)	prevatime=$curatime;;
	esac
done < date.log

will give You an output like this:

Code:
Previous Access time is 1970!
Difference from prev access time is 20433103 minutes and 45 seconds
Difference from prev access time is 0 minutes and 7 seconds
Difference from prev access time is 4 minutes and 53 seconds
Difference from prev access time is 55 minutes and 0 seconds


Maybe something to start with?

Best regards,
Lakris
 

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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)
All times are GMT -4. The time now is 03:35 PM.
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