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edited Oct 26, 2017 at 21:26

It is not possible to write a script in the configuration file to pull a variable for port number.

But you can write a bash function to get the port for you and place it into the correct place. For example place the following to the ~/.bashrc:

function ssh-dynamic() {
  PORT=`sh get_port_for_somehost.sh`
  exec ssh -p $PORT"$PORT" somehost $@"$@"
}

where the other configuration may stay in the ~/.ssh/config.

It is not possible to write a script in the configuration file to pull a variable for port number.

But you can write a bash function to get the port for you and place it into the correct place. For example place the following to the ~/.bashrc:

function ssh-dynamic() {
  PORT=`sh get_port_for_somehost.sh`
  exec ssh -p $PORT somehost $@
}

where the other configuration may stay in the ~/.ssh/config.

It is not possible to write a script in the configuration file to pull a variable for port number.

But you can write a bash function to get the port for you and place it into the correct place. For example place the following to the ~/.bashrc:

function ssh-dynamic() {
  PORT=`sh get_port_for_somehost.sh`
  exec ssh -p "$PORT" somehost "$@"
}

where the other configuration may stay in the ~/.ssh/config.

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answered Oct 26, 2017 at 18:42

Jakuje

It is not possible to write a script in the configuration file to pull a variable for port number.

But you can write a bash function to get the port for you and place it into the correct place. For example place the following to the ~/.bashrc:

function ssh-dynamic() {
  PORT=`sh get_port_for_somehost.sh`
  exec ssh -p $PORT somehost $@
}

where the other configuration may stay in the ~/.ssh/config.