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How do you read arguments in a shell program - $1, $2 ..?

Answer Posted / pitambar mishra

### Script for greater between 2 numbers
### name : greater_of_2_numbers.ksh

#! /bin/ksh

### If you won't supply 2 numbers then it will prompt you to 2 numbers. ###

if [ $# -ne 2 ] ($# : number of positional parameters)
then
echo "Usage: $0 <Enter 2 numbers>" ($0 : name of script)
exit 1
fi

### main script
if [ $1 -gt $2 ] ($1 and $2 : Two positional parameters)
then
echo "$1 is greater than $2"
elif [ $2 -gt $1 ]
then
echo "$2 is greater than $1"
else
echo "Two numbers are equal"
fi

To execute :
ksh greater_of_2_numbers.ksh 5 4

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