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Top Forums UNIX for Dummies Questions & Answers How to subtract 2 hours from 'date' in shell ( /bin/sh ) script ? Post 2851 by Optimus_P on Thursday 7th of June 2001 03:23:41 PM
Old 06-07-2001
crewd but it works.

(host):# date +%Y-%m-%d-%H-%M-%S
2001-06-07-14-25-18
(host):# date +%Y-%m-%d-%H-%M-%S|awk -F"-" '{ print $1$2$3($4-2)$5$6 }'
20010607122522

or

OLDHOUR=`date +%H|awk '{ print ($1-2) }'`
FILES=`ls -l|grep -v total|awk '{ print $8 }'|awk -F":" '{ print $1 }'`
echo ${OLDHOUR}
echo ${FILES}

for i in `ls`;do
if [[ ${FILES} -le ${OLDHOUR} ]]; then
echo "This file ($i) is older then 2 hours from the current time"
fi
done
--- OUTPUT---
(host):# ./time.ksh
13
10 10 15 15 10
./time.ksh[6]: 10^J10^J15^J15^J10: syntax error

you would have to work out the FILES variable cuz there is a ^J in there and i dont know how to get rid of it. it seems to be comming from the -F option.

Last edited by Optimus_P; 06-07-2001 at 05:40 PM..
 

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IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME
igawk - gawk with include files SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ... igawk [ all gawk options ] [ -- ] program-text file ... DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1). AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like @include getopt.awk in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path. OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports. EXAMPLES
cat << EOF > test.awk @include getopt.awk BEGIN { while (getopt(ARGC, ARGV, "am:q") != -1) ... } EOF igawk -f test.awk SEE ALSO
gawk(1) Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995. AUTHOR
Arnold Robbins (arnold@skeeve.com). Free Software Foundation Nov 3 1999 IGAWK(1)
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