Shell Programming and Scripting

with the same input you had specified

Code:

test.1.0.0.1.tar.gz
test1.1.0.0.1.tar.gz
test12.1.0.0.1.tar.gz
test2.1.2.1.2.tar.gz
test23.2.0.3.1.tar.gz
test3.1.0.0.1.tar.gz
test32.1.1.1.1.tar.gz
test33.1.1.1.1.tar.gz
test34.1.1.1.1.tar.gz
test4.2.2.2.2.tar.gz
test5.1.1.1.1.tar.gz
test56.1.1.1.1.tar.gz
test8.1.1.1.1.tar.gz

try the following code,
i had included some changes which will take care of stripping of test*
and *tar.gz
just execute the following script

Code:

# !/usr/bin/ksh

ini=10000
sum=0
max=0
cnt=1
finalver=""

cal()
{
  sum=$(($sum + $1 \* $ini))
  ini=$(($ini / 10))
}

cat datafile | while read ver1
do
ini=10000
sum=0
  ver=`echo $ver1 | sed 's/test//;s/^\.//;s/\.tar\.gz//'`
  echo $ver | sed 's/\./ /g' | while read v1 v2 v3 v4
  do
  if [ ! -z $v1 ]
  then
     cal $v1
     v1=""
  fi
if [ ! -z $v2 ]
  then
     cal $v2
     v2=""
  fi
  if [ ! -z $v3 ]
  then
     cal $v3
     v3=""
  fi
  if [ ! -z $v4 ]
  then
     cal $v4
     v4=""
  fi
  done
  if [ $sum -gt $max ]
  then
     max=$sum
     finalver=$ver1
  fi
done
echo "Final Version: $finalver"
exit 0

output: Final Version: test56.1.1.1.1.tar.gz

Is that what you had requested?

I have modified vino's script.but have not performed much testing.pls check this out.I dont claim to be a better solution.but this should work..
What do you say vino.

here is the script
#! /bin/sh

maxversion=`(sed 's/\.//g' ver.txt | sort -n | tail -1)`

while read line
do
x=`echo "$line" | tr -d '.'`

if [ "$x" = "$maxversion" ]
then
echo "maxver is $line"
exit
fi
done < ver.txt

Run the script against the systemali's latest input. It will not give the right answer. That script was written to cater to an earlier set of input.

Hurray !!!!!!!!!! although its still raw..but it gets the job done...

(svpkg1-nd:admin1) $ cat testfile
-r-xr-xr-x 1 root other 715 Aug 23 2005 /spare3/ARCHIVE/test3.1.2.3.9.tar.gz
-r-xr-xr-x 1 root other 719 Aug 23 2005 /spare3/ARCHIVE/test3.1.2.3.4.tar.gz
-r-xr-xr-x 1 root other 1590 Nov 16 14:58 /spare3/ARCHIVE/test3.1.2.3.11.tar.gz
-r-xr-xr-x 1 root other 708 Aug 18 2005 /spare3/ARCHIVE/test3.1.2.3.10.tar.gz
-r-xr-xr-x 1 root other 1661 Oct 27 13:37 /spare3/ARCHIVE/test3.1.0.0.4.tar.gz
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $ flag=`cat testfile | awk '{print $9}' | cat -n | tee /tmp/ali |sed s/test3.// | sed s/.tar.gz// | sed 's/\.//g' | sort -n -r -k 2 | tr / ' '|sort -n -r -k 4| head -1 | nawk '{print $1}'`
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $
(svpkg1-nd:admin1) $ head -$flag /tmp/ali | tail -1 |nawk '{print $2}'

/spare3/ARCHIVE/test3.1.2.3.11.tar.gz ----> this is what i was looking for


Thank you every one for all your assistance....As always much appreciated

Yes in that case it won't work.But as systemali mentioned before that he was able to yank filename "test*" and "tar.gz" from the list and kept numbers in ver.txt file.then we can run this script against that file.
This is another solution of the same prob.But anyway problem is already solved.

sed does not impact or change the input file, it uses memory to duplicate the file, called "pattern space", it works by copying the input file to memory and does its work using the memory version of the file. If you wish to perform further operations on the output, then I suggest you redirect the output to a file i.e. using the ">" character.

e.g. sed command > outputfile


Good luck!

sed does not change or alter the original file whatsoever, it copies the file supplied to it from the command line to a region of memory called the "pattern space" it uses this to perform its operations and afterwards returns its output to the command line. If you want to perform an operation on the output from sed, then I suggest you redirect its output to a file using the ">" character. Then you can further manipulate the data without affecting the original file.

Good luck!