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Top Forums Shell Programming and Scripting Need Help on date subtraction Post 302732385 by fpmurphy on Saturday 17th of November 2012 11:57:43 AM
Old 11-17-2012
If you have ksh93:
Code:
#!/bin/ksh

LASTLINE=""
last=""

while read CURRLINE
do
    this=${CURRLINE:0:4}"-"${CURRLINE:4:2}"-"${CURRLINE:6:2}" "${CURRLINE:8:2}":"${CURRLINE:10:2}":"${CURRLINE:12:2}
    [[ -n $last ]] && {
        SEC=$(( $(printf "%(%s)T" "$this") - $(printf "%(%s)T" "$last") ))
        MIN=$(( SEC/60 ))
        SEC=$(( SEC%60 ))
        printf "%s  %s  %d:%02d\n" $CURRLINE $LASTLINE $MIN $SEC
    }
    LASTLINE=$CURRLINE
    last=$this
done < infile

Output for your examples
Code:
20121029135721 20121029135649 0:32
20121030091540 20121029135721 1158:19
20121030093420 20121030091540 18:40
20121030094340 20121030093420 9:20
20121030095427 20121030094340 10:47
20121030095856 20121030095427 4:29
20121030100104 20121030095856 2:08
20121030100251 20121030100104 1:47

 

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KEYARCH(1p)						User Contributed Perl Documentation					       KEYARCH(1p)

NAME
keyarch - DNSSEC-Tools daemon to archive old KSK and ZSK keys SYNOPSIS
keyarch [options] <keyrec_file | rollrec_file> DESCRIPTION
The keyarch program archives old KSK and ZSK keys. Keys are considered old if they are revoked or obsolete. Keys marked as either kskrev or zskrev are revoked; keys marked as either kskobs or zskobs are obsolete. Archived keys are prefixed with the seconds-since-epoch as a means of distinguishing a zone's keys that have the same five digit number. If the required file argument is a keyrec file, then expired keys listed in that file are archived. If the file argument is a rollrec file, the keyrec files of the zones in that file are checked for expired keys. If the -zone option is given, then only revoked and obsolete keys belonging to the specified zone will be archived. The archive directory is either zone-specific (listed in the zone's keyrec record in the zone's keyrec file) or the default archive directory given in the DNSSEC-Tools configuration file. The count of archived keys is given as the program's exit code. Error exit codes are negative. OPTIONS
The following options are recognized: -zone zone_file Name of the zone whose KSKs will be archived. If this is not given, then all the zones defined in the rollrec file will be checked. -kskonly Only archive KSK keys. -zskonly Only archive ZSK keys. -dtconfig config_file Name of an alternate DNSSEC-Tools configuration file to be processed. If specified, this configuration file is used in place of the normal DNSSEC-Tools configuration file not in addition to it. Also, it will be handled prior to keyrec files, rollrec files, and command-line options. -quiet No output will be given. -verbose Verbose output will be given. -help Display a usage message. -Version Displays the version information for keyarch and the DNSSEC-Tools package. EXIT VALUES
On success, keyarch's exit code is the number of keys archived. keyarch has a 0 exit code if the help message is given. keyarch has a negative exit code if an error is encountered. COPYRIGHT
Copyright 2007-2012 SPARTA, Inc. All rights reserved. See the COPYING file included with the DNSSEC-Tools package for details. AUTHOR
Wayne Morrison, tewok@tislabs.com SEE ALSO
rollerd(8), zonesigner(8) Net::DNS::SEC::Tools::conf.pm(3), Net::DNS::SEC::Tools::dnssectools.pm(3), Net::DNS::SEC::Tools::defaults.pm(3), Net::DNS::SEC::Tools::keyrec.pm(3), Net::DNS::SEC::Tools::rollrec.pm(3) keyrec(5), rollrec(5) perl v5.14.2 2012-06-21 KEYARCH(1p)
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