XX_SRC_20130417.txt
XX_SRC_20130417.dat

$cat XX_SRC_20130417.txt
col1=ABC
col2=
col3=xyz

$cd /ab_app/xx/seq

$cat val.txt

xm|20130104|001|0
xy|20130704|002|1
xx|20130405|002|1
xz|20121213|001|1

XX_SRC_20130417_003.txt
XX_SRC_20130417_003.dat

col1=ABC
col2=003
col3=xyz

xm|20130104|001|0
xy|20130704|002|1
xx|20130405|003|1             <---------------------------value updated here
xz|20121213|001|1

XX_SRC_20130417_003.txt
XX_SRC_20130417_003.dat

source_dir=/home/xxx/src
seq_path=/ab_app/xx/seq
file_from_list=`ls  $source_dir/$file_name`
new_file_list=`ls  $source_dir/$new_file_name`
send_sftp(){
    scp $file_to_move $conn_string
    if [[ $? -eq 0 ]]
    then
        cnt=`expr $cnt+1`
        --when cnt=2 then update the val.txt file? 
    fi
    if [[ $? -ne 0 ]]
    then
        print "++++ File Transfer failed at `date +'%Y%m%d %H:%M%S'` " ;
        print "++++ File transfer failed at `date +'%Y%m%d %H:%M%S'`"
        exit 14
    fi
    rm $file_to_move ## irrespective of success or failure of sftp remove the new files
    if [[ $? -ne 0 ]]
    then
        print "++++ ERROR: File Transfer to  failed  at `date +'%Y%m%d %H:%M%S'` " ;
        print "++++    Transferred file could not be removed"
        exit 15
    fi
}
#if [[ $application_id = "2" ]]
#then
    print "Entering here..."
    conn_string=xxx@myserver2:/home/xxx/src
    file_name=xx_*
#fi
cd $seq_path
value=grep "xx" val.txt| cut -d"|" -f2
get_seq_val=$value+1
#if [[ $application_id = "2" ]]
#then
for list_files in $file_from_list
do
   fl_name=`basename list_files`
   fl=`echo $fl_name|cut -d'.' -f1`
   extn=`echo .${fl_name#*.}`
   new_file_name=$fl"_"$get_seq_val$extn  
   cp $list_files $new_file_name
done

for new_files in $new_file_list
do
   file_to_move=$new_files
   send_sftp()
   ### if all the files transferred successfully then update the value in value.txt file
   #-should we use sed to update the file? 
   #-can we track if all the files are sftp ed successfully? 
done
#fi