myssh

#!/bin/bash

# Usage: run the script like ./myssh 3 or if you want list of options ./myssh

# Written by Jon Nikolakakis with help from Jamie Bainbridge, Version 0.1 

# Change the knownUserloc entry to match your username
# Example: knownUserloc="/home/jnuser"
knownUserloc="/root"
HOSTFILE="$knownUserloc/.ssh/known_hosts"
# Change your kerberos
kerberosUser="yourKerbUsernameGoesHere"

# setup an alias for next login, upon next login you can just type m, to login to your servers
# Or you you can do something like m a where a is equal to the a='root@10.0.0.1'
if [ $(egrep -c myssh "$knownUserloc/.bashrc") != 0 ]; then
        echo "myssh alias exits"
else
        cat >> $knownUserloc/.bashrc <<EOF    
alias m='/myssh.sh' 
EOF
fi

declare -a arr=()

if [ -e "/$knownUserloc/.ssh/id_rsa" ];then
        echo "id_rsa file exits"
else
        ssh-keygen -t rsa
fi


# Add the servers you want to log into
a='root@10.0.0.1'
b='root@10.0.0.2'
c='root@10.0.0.3'
d='root@10.0.0.4'
e='root@10.0.0.5'
f='root@10.0.0.6'
g='root@10.0.0.7'
h='root@10.0.0.8'
i="$kerberosUser@op.example.com"
j="$kerberosUser@foo.example.com"
k="$kerberosUser@example.com"

myserv=($a $b $c $d $e $f $g $h $i $j $k)

for i in ${myserv[@]}
do
        arr+=( "$(echo "$i" | cut -d @ -f 2)")
done

# This needs to be improved here here, it should first check on the $1, instead it goes through all, need to rewrite this.


for HOST in ${arr[@]}; do
    if [ $(egrep -c "${HOST}" "$HOSTFILE") != 1 ]; then
                echo "${HOST} not have ssh keys" 
                ping -W1 -c1 -q ${HOST} 2>&1
                if [ $? -gt 0 ];then
                        echo "host not reachable"
                else
                        if [[ "$1" == ${HOST} ]];then
                                echo "do kerberos ssh  =  ${HOST}"
                                ssh-copy-id "$kerberosUser@${HOST}"
                        fi
                        if [[ "$1" -gt $1 ]];then
                                echo "do root ssh ${HOST}"
                                ssh-copy-id "${HOST}"

                        fi
                fi
    fi

done

case $1 in
        1)
                echo "This is the going into $a server"  
                ssh $a
                ;;
        2)
                echo "This is the going into $b server"
                ssh $b
                ;;
        3)
                echo "This is the going into $c server"
                ssh $c
                ;;
        4)
                echo "This is the going into $d server"
                ssh $d
                ;;
        5)
                echo "This is the going into $e server"
                ssh $e
                ;;
        6)
                echo "This is the going into $f server"
                ssh $f
                ;;
        7)
                echo "This is the going into $g server"
                ssh $g
                ;;
        8)
                echo "This is the going into $h server"
                ssh $h
                ;;
        9)
                echo "This is the going into $i server"
                ssh $i
                ;;
        10)
                echo "This is the going into $j server"
                ssh $j
                ;;
        11)
                echo "This is the going into $k server"
                ssh $k
                ;;

# This is executed if you didn't run it like m $1
	*)
#		You can add your descriptions here
                echo "You didn't enter a number like m 2 (or ./myssh 2) ,you can visit the following servers to get the access: "
		echo "1) = Server #Enter Description"
		echo "2) = Server #Enter Description"
		echo "3) = Server #Enter Description"
		echo "4) = Server #Enter Description"
		echo "5) = Server #Enter Description"
		echo "6) = Server #Enter Description"
                echo "7) = Server #Enter Description"
		echo "8) = Server #Enter Description"
		echo "9) = Server #foobar"
                echo "10) = Server #optimus"
		echo "11) = Server #colabshell"
		
		read -p  "Type a number between 1 to 11:   " server
		if [ $server -eq 1 ]; then
			ssh $a
		elif [ $server -eq 2 ]; then
			ssh $b
		elif [ $server -eq 3 ]; then
                        ssh $c
		elif [ $server -eq 4 ]; then
	                ssh $d
		elif [ $server -eq 5 ]; then
                        ssh $e
                elif [ $server -eq 6 ]; then
                        ssh $f
                elif [ $server -eq 7 ]; then
                        ssh $g
		elif [ $server -eq 8 ]; then
                        ssh $h
		elif [ $server -eq 9 ]; then
                        ssh $i
		elif [ $server -eq 10 ]; then
                        ssh $j
                elif [ $server -eq 11 ]; then
                        ssh $k
		fi
		;;
esac