SSH Run Remote Command

# This script can be used to run commands on remote machines.
# You can run commands or copy files over SCP
# Tested on MAC OS and RHEL 7
# Save as script.sh and write IP/Hostnames to external file example hosts.txt
# Run /home/user/script.sh hosts.txt

#!/bin/bash
while read line
do
    ssh root@"$line" "hostname; yum install net-snmp net-tools -y;" < /dev/null
    #scp /home/user/local_authorized_keys root@"$line":/root/.ssh/authorized_keys
done < "$1"



##################################################
####### Working Example script + hosts.txt #######
##################################################


# cat /home/typhoon/script.sh

#!/bin/bash
while read line
do

#ssh root@"$line" "hostname; yum install net-snmp net-tools -y;" < /dev/null

scp /Users/typhoon/Downloads/nanorc root@"$line":/etc/nanorc
scp -rp /Users/typhoon/Downloads/nano root@"$line":/usr/share

done < "$1"

# cat /home/typhoon/hosts.txt
192.168.0.10
192.168.0.11
192.168.0.12
192.168.0.13