This is a simple bash script to reproduce ssh-copy-id behavior on the Mac OS, since this shit OS doesn't have it natively.

ssh-copy-id.sh

#!/bin/bash
# This is a simple shell script to reproduce ssh-copy-id behavior
# on the MAC, since that shit OS does not have it natively.
#
# This script is under GPL version 3
# Author: Kemel Zaidan
# email: kemelzaidan AT gmail DOT com
# website: kemelzaidan.com.br
#

## VARIABLES

SSH_PUB_KEY=~/.ssh/id_rsa.pub
USER=$1
HOST=$2

# exit if no atributes were passed
if [ $# -eq 0 ]; then
    echo ""
    echo "Please, type ssh-copy-id USER HOST"
    echo ""
    exit 1
fi

# test if there is a SSH public key
if [ ! -f $SSH_PUB_KEY ]; then
    echo 'No public SSH key found!' 
    exit 1
fi

cat $SSH_PUB_KEY | ssh $USER@$HOST "mkdir ~/.ssh; cat >> ~/.ssh/authorized_keys"

# exit if successfull
echo ""
echo "Key successfully copied to the server"
echo ""