Shell Programming and Scripting

/home/test.dat|1000000|test.bat
/home/test1.dat| 2000000|test1.bat

ls
stat
...

ls -l | awk  '{print $1 "     the size of this file is =" $5}'

ls -l |awk  '{if ($5 > 20 ) print "$1 size is bigger than 20" ; else print "$1 is a small file"}'

ls -l |awk  '{if ($5 > 20 ) {mv $1 $1.dat} }'

ls -l |awk  '{if ($5 > 20 ) {print $1" size is bigger than 20"}  else {print $1" is a small file"}}'

ls -l |awk  '{if ($5 > 20 ) {system("mv "$1 $1".dat")} }'

ls -l |awk  '{if ($5 > 20 ) {system("mv "$1 $1".dat")} }'

#! /bin/ksh

n=`wc -l < test.dat`
i=1

while [ "$i" -le "$n" ]
do    

# read line by line from the input file   
line=`cat test.dat | head -$i | tail -1`

file=`echo $line | cut -c1-100 | sed -e 's/^ *//g;s/ *$//g'`

size=`echo $line | cut -c101-120 | sed -e 's/^ *//g;s/ *$//g'`

batch_job=`echo $line | cut -c121-160 | sed -e 's/^ *//g;s/ *$//g'`


if [ $(wc -l < `echo $file` ) -gt `echo $size` ] #to notify if the file has more than 100 lines
then
mv `echo $file` `echo $file`.big;
echo "Membership file is large" |mailx -s "Membership file exceeded 200k records" "test@abco.com"

fi


i=`expr $i + 1`
done