Shell Programming and Scripting

#!/bin/ksh
echo "Which host entry would you like to add to $1"
read host_to_add
echo "what is the IP address?"
read ip

echo "Adding $host_to_add $ip to $1"
ssh $1 'echo $host_to_add $ip >> /etc/hosts'

string= "$1 'echo $host_to_add $ip >> /etc/hosts'"
ssh $string

#!/bin/ksh

if [ $# -ne 1 ]; then

        echo usage: "./add_a_host <hostname>"
        exit
fi


ping $1 2 > /dev/null

if [ $? != 0 ] ; then
        echo " "
        echo "Couldn't ping $1, cannot proceed with script"
        exit
else


echo "Which host entry would you like to add to $1"
read host_to_add
echo "what is the IP address?"
read ip

echo "Adding $host_to_add $ip to $1"

ssh $1 "echo $ip $host_to_add  >> /etc/hosts"


fi