SSH help

ssh-to-server-no-password.sh

# setup passwordless ssh
# on the client machine
# 1. create ssh key pair
ssh-keygen -t rsa -b 4096 -C "[email protected]"

# 2. create authorized_keys file using the PUBLIC key (careful this will destroy an existing authorized_keys file)
scp id_rsa.pub [email protected]:/home/stacy/.ssh/authorized_keys

# Change permissions on .ssh directories and files if needed (on client and server)
cd ~/.ssh
chmod 700 .
chmod 640 authorized_keys
chmod 600 {your_key_files}

# test the connection from the client - should not get password prompt
ssh [email protected]

# Remove password on the server for extra security if you know what you're doing and don't need to sudo
passwd -d stacy

ssh_util.sh

# multiline, multicommand, execute remotely
ssh user@somehost 'export SOME_VAR=someValue\
&& export ANOTHER_VAR=anotherValue\
&& bash -s' < localscript.sh

# list fingerprints
ssh-keygen -l -f ~/.ssh/known_hosts

# list fingerprint of one host
ssh-keygen -l -f ~/.ssh/known_hosts -F myhost