Secure copy to/from remote host using scp and ssh

scp

# make sure ssh-client is installed

# login
$ ssh user@remotehost

# generating key pairs
$ ssh-keygen -t dsa

# install the key by either of the commands
$ scp ~/.ssh/id_dsa.pub user@remotehost:.ssh/authorized_keys
$ ssh-copy-id user@remotehost

# from now on, no password prompt will appear after login
# ssh user@remotehost

# secure copy a file to the remote host
$ scp /source_path/filename user@remotehost:destination_path/newfilename

# recursively copy a folder, preserving timestamp with -rp flags
$ scp -r /source_path/folder user@remotehost:destination_path/