Script to find out biggest number from given three nos

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rajeshkumar created the topic: Script to find out biggest number from given three nos

Write Script to find out biggest number from given three nos. Nos are supplies as command line argument. Print error if sufficient arguments are not supplied.


#!/bin/bash
#
# Linux Shell Scripting Tutorial 1.05r3, Summer-2002
#
# Written by Vivek G. Gite
#
# Latest version can be found at www.nixcraft.com/
#
# Q2. Script to find out bigest number
#
# Algo:
# 1) START: Take three nos as n1,n2,n3.
# 2) Is n1 is greater than n2 and n3, if yes
# print n1 is bigest no goto step 5, otherwise goto next step
# 3) Is n2 is greater than n1 and n3, if yes
# print n2 is bigest no goto step 5, otherwise goto next step
# 4) Is n3 is greater than n1 and n2, if yes
# print n3 is bigest no goto step 5, otherwise goto next step
# 5) END
#
#

if [ $# -ne 3 ]
then
echo "$0: number1 number2 number3 are not given" >&2
exit 1
fi
n1=$1
n2=$2
n3=$3
if [ $n1 -gt $n2 ] && [ $n1 -gt $n3 ]
then
echo "$n1 is Bigest number"
elif [ $n2 -gt $n1 ] && [ $n2 -gt $n3 ]
then
echo "$n2 is Bigest number"
elif [ $n3 -gt $n1 ] && [ $n3 -gt $n2 ]
then
echo "$n3 is Bigest number"
elif [ $1 -eq $2 ] && [ $1 -eq $3 ] && [ $2 -eq $3 ]
then
echo "All the three numbers are equal"
else
echo "I can not figure out which number is biger"
fi

#
# ./ch.sh: vivek-tech.com to nixcraft.com referance converted using this tool
# See the tool at www.nixcraft.com/uniqlinuxfeatures/tools/
#


Regards,
Rajesh Kumar
Twitt me @ twitter.com/RajeshKumarIn