Shell Programming and Scripting

logdir="/home/trial/testing\/"

for eachfile in `ls -l  $logdir* | grep -v 'tar.gz$'`; do
        file_month=`echo "$eachfile" | awk -F' ' '{ print $6 }'`
        if [[ "${file_mon}" == "${last_month}" ]]; then
                        echo "$eachfile" >> "$files2process"
        fi
done
        if [[ -f "$files2process" ]] ; then
 archivename="${archivedir}/logarchive_${year}_${last_month}.tar"
       cat "$files2process" | awk -F' ' '{ print $NF }' | sed 's-^-'"${logdir}"'-'| xargs tar -cvf  "$archivename"        #prefixing dir. path to filename b4 tar
                gzip "${archivename}"
                gzip -c "${archivename}.tar.gz" | tar -t >> "filesprocessed.txt"
                      cmp "$files2process" "filesprocessed.txt"
                if [ $? -eq 0 ] ; then 
                    echo "Success" ; cd "$logdir" ; rm `cat $files2process`
                      fi

ls -l "$logdir/" | grep -v "tar.gz" | grep " $last_month " | awk -F' ' '{ print $NF }' | sed 's:^:'"${logdir}"'/:' | xargs tar -cvf "$archive_name"

cd $logdir
touch -t 201209010000  /tmp/d1
touch -t 201209010000  /tmp/d2
# back the files we want
tar -cfv /tmp/mytarball.tar $(find . \( -newer /tmp/d1 -a ! -newer /tmp/d2 \) )
if [ $? -ne 0 ] ; then
   echo "tar failed"
   exit 1
fi
# the above traps all tar failures
# do something here to check read the tar file  I do not know what you want
# We could restore the tarball someplace and do a directory compare maybe

gzip /tmp/mytarball.tar 
# /tmp is not good longer term storage

mv /tmp/mytarball.tar.gz /someplace/safe
# delete the files
find . \( -newer /tmp/d1 -a ! -newer /tmp/d2 \) -exec rm {} \;