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Quick Help in shell script

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# 1  
Old 05-23-2010
Question Quick Help in shell script
Need to subtract date stored in variable from the current date, answer should come in days..and months.

Suppose two variable having value like
Code:
A=”Wed Jan 15 08:59:08 GMT 2014”
B= `date`      #Sun May 23 09:29:40 GMT 2010
SubtractAB= $A-$B #..?
AddAB=$A+$B #... ?
C=$B+9 # Sun May 23 09:29:40 GMT 2010 +9 = ??

Anyone who can solve it?

Thanks,
kuldeep
Last edited by Scott; 05-23-2010 at 06:48 AM.. Reason: Code tags please...
# 2  
Old 05-23-2010
Have a read of one of these links:

https://www.unix.com/answers-frequent...rithmetic.html
# 3  
Old 05-23-2010
Data Quick Help in shell script
Yes Franklin,

I went through the post. it is really good one but only datecalc is fulfilling my requirement.
I have tried it by coping to my local machine.
BUT i am working on Qualified environment and can not create such huge function/script.
I tried to extract the date functionality but i couldn't work.

Let me explain you about my requirement.

this is my script
Code:
#!/usr/bin/ksh
HTML=/export/home/some/report.html
TEMP_FILE=/export/home/some/report.tmp
My_File=/export/home/some/My_File.txt
rm -rf $HTML $TEMP_FILE
touch $HTML $TEMP_FILE
SUBJECT="Truststore Validity Report on `date`"
MAIL_LIST="kuldeepsingh.yadav@ge.com"
#obtain current system date
YEAR=`date '+%Y'`
#let "YEAR= $YEAR+8"
MONTH=`date '+%m'`
let "tmpMonth=$MONTH+3"
let "lastYear=$YEAR-1"

if [ $tmpMonth -gt 12 ] ; then
let "newMonth=$tmpMonth-12"
let "newYear=$YEAR+1"
else
let "newMonth=$tmpMonth"
let "newYear=$YEAR"
fi

MONTHS="Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"
set -A MON $MONTHS
echo "tempMonth:$tmpMonth tempYear:$YEAR newMonth:$newMonth newYear:$newYear"
thirdMonth=${MON[$newMonth-1]}
#if [ newYear = "$YEAR"]
secondMonth=${MON[$newMonth-2]}
firstMonth=${MON[$newMonth-3]}
expiredMonth=${MON[$newMonth-4]}
#echo "thirdMonth:$thirdMonth secondMonth:$secondMonth firstMonth:$firstMonth expiredMonth:$expiredMonth"

# Function to append output (in html format) to file.
build_html() {
        echo $1 >> $HTML
        echo $1
}

################################################################################

cat $My_File | egrep "Alias|Valid" > $TEMP_FILE
      
{
 while read rec; do
         getLine=`echo $rec | awk '{print $1;}'`
 if [ "${getLine}" = "Valid" ] ; then
line2=`echo $rec|cut -c13-76`
getYear=`echo $rec|cut -c73-76`
getMonth=`echo $rec|cut -c53-55`
#echo "getYear-getMonth: $getYear-$getMonth"

if [ $thirdMonth = "$getMonth" -a $newYear = "$getYear" ] ; then
         build_html "<td bgcolor=FFFF00>${line2}</td>"
         build_html "</tr>"
elif [ $secondMonth = "$getMonth" -a $newYear = "$getYear" ] ; then
         build_html "<td bgcolor=FFCC00>${line2}</td>"
         build_html "</tr>"
elif [ $firstMonth = "$getMonth" -a $newYear = "$getYear" ] ; then
         build_html "<td bgcolor=FF6600>${line2}</td>"
         build_html "</tr>"
elif [ $expiredMonth = "$getMonth" -a $newYear = "$getYear" -o $lastYear = "$getYear" ] ; then
         build_html "<td bgcolor=999999>${line2}</td>"
         build_html "</tr>"
else
        build_html "<td>${line2}</td>"
        build_html "</tr>"
  fi
fi
        done } < ${TEMP_FILE}

build_html "</code>"
build_html "</tr>"
build_html "</table>"
build_html "</tr>"
build_html "</table>"
done

cat $HTML

Input file ($TEMP_FILE.)

Input file which is created by keytool and stored in $TEMP_FILE.

Code:
 Tue Mar 11 05:17:41 GMT 2008 until: Fri Mar 09 05:17:41 GMT 2018
 Thu Jun 12 18:36:48 GMT 2008 until: Sun Jun 10 18:36:48 GMT 2018
 Thu Jun 12 18:29:42 GMT 2008 until: Sun Jun 10 18:29:42 GMT 2018
 Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2018
 Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2018
 Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2018
 Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2018
 Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2018
 Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2018

Can you help me to highlight those lines from input files which are having "until:somedate" are older then today in red and those about to come in 3 months time as orange.
the time stamp will be taken from input file after the until.

I am really wondering on this forum for getting this done. today it is almost 3 days.
# 4  
Old 05-23-2010
Quote:
Originally Posted by KuldeepSinghTCS
...
Code:
 Tue Mar 11 05:17:41 GMT 2008 until: Fri Mar 09 05:17:41 GMT 2018
 Thu Jun 12 18:36:48 GMT 2008 until: Sun Jun 10 18:36:48 GMT 2018
 Thu Jun 12 18:29:42 GMT 2008 until: Sun Jun 10 18:29:42 GMT 2018
 Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2018
 Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2018
 Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2018
 Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2018
 Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2018
 Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2018

Can you help me to highlight those lines from input files which are having "until:somedate" are older then today in red and those about to come in 3 months time as orange.
the time stamp will be taken from input file after the until.
...
Something like this maybe ?

Code:
$ 
$ 
$ cat f9
Tue Mar 11 05:17:41 GMT 2008 until: Fri Mar 09 05:17:41 GMT 2010
Thu Jun 12 18:36:48 GMT 2008 until: Sun Jun 10 18:36:48 GMT 2010
Thu Jun 12 18:29:42 GMT 2008 until: Sun Jun 10 18:29:42 GMT 2010
Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2010
Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2010
Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2010
Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Sun Aug 22 16:40:04 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Mon Aug 23 16:40:04 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Tue Aug 24 16:40:04 GMT 2010
Tue May 27 16:40:04 GMT 2008 until: Sat Dec 25 16:40:04 GMT 2010
$ 
$ 
$ cat -n f9.pl
     1    #!/usr/bin/perl -w
     2    use Date::Calc qw(Parse_Date Today Delta_Days Add_Delta_YMD Date_to_Days);
     3    $file = "f9";
     4    @y = Today();
     5    @z = Add_Delta_YMD(@y, 0,3,0);
     6    open (IN, $file) or die "Can't open $file: $!";
     7    while (<IN>) {
     8      chomp;
     9      /^.*?until: (.*?)$/ and $testdate = $1;
    10      @x = Parse_Date ($testdate);
    11      $dd = Delta_Days(@y, @x);
    12      print $_,"\t=>\t";
    13      if ($dd < 0) {
    14        print "Earlier than today";
    15      } elsif (Delta_Days(@x, @z) >= 0) {
    16        print "Between today and the next 3 months";
    17      } else {
    18        print "Later than the next 3 months";
    19      }
    20      print "\n";
    21    }
    22    close (IN) or die "Can't close $file: $!";
    23    
$ 
$ 
$ perl f9.pl
Tue Mar 11 05:17:41 GMT 2008 until: Fri Mar 09 05:17:41 GMT 2010    =>    Earlier than today
Thu Jun 12 18:36:48 GMT 2008 until: Sun Jun 10 18:36:48 GMT 2010    =>    Between today and the next 3 months
Thu Jun 12 18:29:42 GMT 2008 until: Sun Jun 10 18:29:42 GMT 2010    =>    Between today and the next 3 months
Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2010    =>    Earlier than today
Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2010    =>    Between today and the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2010    =>    Between today and the next 3 months
Tue Mar 11 05:18:02 GMT 2008 until: Fri Mar 09 05:18:02 GMT 2010    =>    Earlier than today
Tue May 27 16:29:27 GMT 2008 until: Fri May 25 16:29:27 GMT 2010    =>    Between today and the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Fri May 25 16:40:04 GMT 2010    =>    Between today and the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Sun Aug 22 16:40:04 GMT 2010    =>    Between today and the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Mon Aug 23 16:40:04 GMT 2010    =>    Between today and the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Tue Aug 24 16:40:04 GMT 2010    =>    Later than the next 3 months
Tue May 27 16:40:04 GMT 2008 until: Sat Dec 25 16:40:04 GMT 2010    =>    Later than the next 3 months
$ 
$

tyler_durden
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