This is a quick one – I work almost entirely on remote servers via SSH & SFTP at this point, so passwordless SSH is a huge timesaver. The setup is easy, but it’s a few steps and I always forget how to do it. I threw together this bash script to make it easier – to use it, run:
./passless.sh (username) (server)
The Code:
#! /usr/bin/env bash MINPARAMS=2 if [ $# -lt "$MINPARAMS" ] then echo echo "This script needs at least $MINPARAMS command-line arguments!" exit 2 fi USER=$1 SERVER=$2 echo "---" echo "Step 1: Generating RSA Key - Accept the default location & don't enter a password." echo "---" if [ -f ~/.ssh/id_rsa ] then echo "RSA Key already exists." else ssh-keygen -t rsa fi echo "---" echo "Step 2: Creating the .ssh directory on the remote server." echo "---" ssh ${USER}@${SERVER} mkdir -p .ssh echo "---" echo "Step 3: Copying the ssh key to the remote server." echo "---" cat .ssh/id_rsa.pub | ssh ${USER}@${SERVER} 'cat >> .ssh/authorized_keys' echo "---" echo "Done! You should be able to log in now." echo "---"
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