Consider a login on ta Host machine. To run a command (let us try a simple ls to list the current directory), just type:
ssh -X login@IPhostMachine ls
In practice, commands are longer and you would rather use double quotes around the command(s)
ssh -X login@IPhostMachine "cd temp; ls"
SSH logs you in the home directory (e.g., /home/login).
Then, you can type most of the unix commands. You need to be careful with single and double quotes.
Note also that to run a command in the background, you need this kind of syntax:
ssh login@host "nohup myprogram > foo.out 2> foo.err < /dev/null &"
This simple one may not work:
ssh login@host "myprogram &"
Indeed, backgrounded job can cause the shell to hang on logout.
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