using readline with parameter

Shell Programming and Scripting
1

dear all,
i have code shell like this but i want to using parameter for this shell how i can do that :

ex ./sample.sh 100 500

sample.sh

START=${1}
LAST=${2}

for (( a=${START}; a<=${LAST}; a++ ))
do
{
        echo $a
}
done

thx for your advice

2

for-loop in C-style aren't posix standard. Try one of the following options:

for i in {100..500}
do
    echo $a
done

a=100
while [ $a -le 500 ]
do
    echo $a
    a=$(($a + 1))
done
3

@balajsuri thx for your replay but i dont want using insert variable in scrpit but using parameter for inserting like my example:)

4 
a=$1
while [ $a -le $2 ]
do
    echo $a
    a=$(($a + 1))
done

If you insist on using C-style for loops, here's an example:

for (( i=$1; i<=$2; i++ ))
do
    echo $i
done
5

good... whats difference if using while read line and while only iam stillnot understand with this difference

6

while read <var_name> --> read contents from a file line by line. For e.g. you have a file input.dat with following contents:
AAAA
BBBB
CCCC

The following while loop will read the file line by line and echo it:
while read x
do
echo $x
done < input.dat