# To ssh via pem file (which normally needs 0600 permissions):
ssh -i /path/to/file.pem user@example.com

# To connect on an non-standard port:
ssh -p 2222 user@example.com

# To connect and forward the authentication agent
ssh -A user@example.com

# To execute a command on a remote server:
ssh -t user@example.com 'the-remote-command'

# To tunnel an x session over SSH:
ssh -X user@example.com

# Redirect traffic with a tunnel between local host (port 8080) and a remote
# host (remote.example.com:5000) through a proxy (personal.server.com):
ssh -f -L 8080:remote.example.com:5000 user@personal.server.com -N

# To launch a specific x application over SSH:
ssh -X -t user@example.com 'chromium-browser'

# To create a SOCKS proxy on localhost and port 9999
ssh -D 9999 user@example.com

# -X use an xsession, -C compress data, "-c blowfish" use the encryption blowfish
ssh user@example.com -C -c blowfish -X

# For more information, see:
# http://unix.stackexchange.com/q/12755/44856

# Copy files and folders through ssh from remote host to pwd with tar.gz compression
# when there is no rsync command available
ssh user@example.com "cd /var/www/Shared/; tar zcf - asset1 asset2" | tar zxf -

# Mount folder/filesystem through SSH
# Install SSHFS from https://github.com/libfuse/sshfs
# Will allow you to mount a folder securely over a network.
sshfs name@server:/path/to/folder /path/to/mount/point

# Emacs can read file through SSH
# Doc: http://www.gnu.org/software/emacs/manual/html_node/emacs/Remote-Files.html
emacs /ssh:name@server:/path/to/file

# Generate ssh key
ssh-keygen -t rsa -C "your_email@example.com" -P "" -q -f ~/.ssh/gitlab_rsa

# ed25519 key
# Added in OpenSSH 6.5
ssh-keygen -t ed25519

ssh-keygen -t ed25519 -C "user@example.com" -q -f ~/.ssh/user@example.com

ssh-copy-id -i ~/.ssh/id_dsa.pub user@machine