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Top Forums Shell Programming and Scripting Calculate age of a file | calculate time difference Post 302495800 by worm on Friday 11th of February 2011 08:57:22 AM
Old 02-11-2011
Calculate age of a file | calculate time difference

Hello,

I'm trying to create a shell script (#!/bin/sh) which should tell me the age of a file in minutes...

I have a process, which delivers me all 15 minutes a new file and I want to have a monitoring script, which sends me an email, if the present file is older than 20 minutes.

To do so, I have created two variables:
Code:
CURRTIME=`date +"%H%M"`
FILETIME=`ls -l $APSYS_DAT/currency.txt | awk '{print $8}' | awk -F: '{print $1 $2}'`

Now, I could calculate: echo $CURRTIME - $FILETIME | bc

But it doesnt calculate it as time... 1305-1255 gives me 50 and not 10 minutes.

How can I calculate with time?

Thanks for your help!

Best regards

Rolf

Last edited by Franklin52; 02-14-2011 at 05:06 AM.. Reason: Please use code tags, thank you
 

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whodo(1M)																 whodo(1M)

NAME
whodo - which users are doing what SYNOPSIS
DESCRIPTION
The command produces merged, reformatted, and dated output from the and commands (see who(1) , ps(1) and acctcom(1M)). If user is specified, output is restricted to all sessions pertaining to that user. The following options are available: Suppress the heading. Produce a long form of output. The fields displayed are: the user's login name, the name of the tty the user is on, the time of day the user logged in (in hours:minutes), the idle time - that is, the time since the user last typed anything (in hours:minutes), the CPU time used by all processes and their children on that terminal (in minutes:seconds), the CPU time used by the currently active processes (in minutes:sec- onds), and the name and arguments of the current process. EXTERNAL INFLUENCES
Environment Variables determines the order in which the output is sorted. If is not specified in the environment or is set to the empty string, the value of is used as a default. If is not specified or is set to the empty string, a default of ``C'' (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to ``C'' (see environ(5)). FILES
SEE ALSO ps(1), who(1), acctcom(1M). STANDARDS CONFORMANCE
whodo(1M)
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