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How to specify command in SSH config file?
This was added in OpenSSH 7.6: add RemoteCommand option to specify a command in the ssh config file instead of giving it on the client’s command line. This allows the configuration file to specify the command that will be executed on the remote host. You can do this with the cooperation of the remote machine as follows.
How to run SSH initial command on remote machine?
On the remote machine, run eval “$LC_SSH_INITIAL_COMMAND” via the per-key settings in ~/.ssh/authorized_keys or from ~/.ssh/rc (beware that if you have a ~/.ssh/rc file, you need to take care of running xauth manually for X11 forwarding).
What does the ssh command do in Linux?
For general information about SSH and other implementations, see the SSH protocol home page. Practically every Unix and Linux system includes the ssh command. This command is used to start the SSH client program that enables secure connection to the SSH server on a remote machine.
Do you need indentation in SSH config file?
Each stanza starts with the Host directive and contains specific SSH options used when establishing a connection with the remote SSH server. Indentation is not required but is recommended since it makes the file easier to read. The Host directive can contain one pattern or a whitespace-separated list of patterns.
When do you run a command in SSH?
With the authorized_keys method, you can similarly run a command when the SSH session exits (unless the shell process is killed abruptly; you should at least trap the HUP signal so that your command is executed even if the connection dies). However this is not a good arrangement for doing something global like mounting a filesystem.
How to run a command from a remote shell?
The most obvious way to run a command remotely is to specify it on the ssh command line. The ssh command is always interpreted by the remote user’s shell. ssh [email protected] ‘. ~/.profile; command_that_needs_environment_variables’ ssh -t [email protected] ‘.
What’s the easiest way to execute SSH in parallel?
One simple & easiest way is via pssh (parallel ssh program) pssh: is a program for executing ssh in parallel on a number of hosts. It provides features such as sending input to all of the processes, passing a password to ssh, saving the output to files, and timing out.