ssh config

[arran4]

Host *
  UseKeychain yes
  AddKeysToAgent yes


     Compression
             Specifies whether to use compression.  The argument must be
             yes or no (the default).

     AddKeysToAgent
             Specifies whether keys should be automatically added to a
             running ssh-agent(1).  If this option is set to yes and a
             key is loaded from a file, the key and its passphrase are
             added to the agent with the default lifetime, as if by
             ssh-add(1).  If this option is set to ask, ssh(1) will
             require confirmation using the SSH_ASKPASS program before
             adding a key (see ssh-add(1) for details).  If this option
             is set to confirm, each use of the key must be confirmed,
             as if the -c option was specified to ssh-add(1).  If this
             option is set to no, no keys are added to the agent.
             Alternately, this option may be specified as a time
             interval using the format described in the TIME FORMATS
             section of sshd_config(5) to specify the key's lifetime in
             ssh-agent(1), after which it will automatically be removed.
             The argument must be no (the default), yes, confirm
             (optionally followed by a time interval), ask or a time
             interval.

     IdentitiesOnly
             Specifies that ssh(1) should only use the configured
             authentication identity and certificate files (either the
             default files, or those explicitly configured in the
             ssh_config files or passed on the ssh(1) command-line),
             even if ssh-agent(1) or a PKCS11Provider or
             SecurityKeyProvider offers more identities.  The argument
             to this keyword must be yes or no (the default).  This
             option is intended for situations where ssh-agent offers
             many different identities.


     VisualHostKey
             If this flag is set to yes, an ASCII art representation of
             the remote host key fingerprint is printed in addition to
             the fingerprint string at login and for unknown host keys.
             If this flag is set to no (the default), no fingerprint
             strings are printed at login and only the fingerprint
             string will be printed for unknown host keys.


Github:

     IdentitiesOnly
             Specifies that ssh(1) should only use the configured
             authentication identity and certificate files (either the
             default files, or those explicitly configured in the
             ssh_config files or passed on the ssh(1) command-line),
             even if ssh-agent(1) or a PKCS11Provider or
             SecurityKeyProvider offers more identities.  The argument
             to this keyword must be yes or no (the default).  This
             option is intended for situations where ssh-agent offers
             many different identities.

[arran4]

user=
##ForwardX11=yes
##ForwardX11Trusted=yes