Launch into two machines only with access to one

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Hi,

This is my setup:

Operator: Hydro Bot: Hydro Manipulator: Hydro

I am on Operator, I need to ssh into Bot and from there ssh into Manipulator, launch a script by cd'ing into its directory and running ./script_launch. Then exit Manipulator and launch node on Bot. Then exit Bot and launch script on Operator. I wrote a bash script that does this - but its not working so now I am looking at using a launch file.

i.e.

ssh bot
ssh Manipulator
cd /path/to/file
./script
exit Manipulator
launch node launch_file.launch
exit Bot
launch nodeOperator launch_fileOperator.launch

any help is much appreciated