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conditioner

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     / _____\
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 /  /      \
/  /        \
|  |        |
|===========|
|           |
|conditioner|
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|===========|
|  |        |
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/__/________\

"Condition" a remote machine's environment to your preferences.

What is it?

conditioner accepts a list of scripts that you want to run on a remote machine and turns them into one giant compressed/base64'd command to be pasted into the remote machine's terminal. Is it safe? No way! Use at your own risk.

Example

I want to add my aliases to a machine that I usually connect to over ssh. I can create a script to do so:

# scripts/append_my_aliases.sh
echo "alias hw='echo hello world'" >> ~/.bashrc

and place it in the scripts directory. When I source conditioner.sh, it generates a single command from all of the scripts in the scripts directory, which can be copied and pasted into the remote session and work as though those scripts had been run locally on the remote machine.

(local)$ source conditioner.sh
Run "conditioner_command" to generate the command.
Run "conditioner_import_dotfile" to import a dotfile.
(local)$ conditioner_command
echo 'H4sIAAAAAAACA22NQQqDQBAE776iGQ/e9AXxJYKMs0tGWHeWHUVyydsNEsglx+pqqBZcSsxh3l4zp5U9eu/atHCpa9l9+KujqIHuAXo+ups1pmQ4rabQEcYR76Ff2LXK91+PjIncjirxJyfCbkjGAaKcn58CNRdmuxT5lwAAAA==' | base64 -d | gunzip | bash

Copying the output of the command, I ssh into my remote machine and paste it into the prompt:

(local)$ ssh [email protected]
Welcome to Remote!
[remote]$ hw # alias doesn't exist yet
hw: command not found
[remote]$ echo 'H4sIAAAAAAACA22NQQqDQBAE776iGQ/e9AXxJYKMs0tGWHeWHUVyydsNEsglx+pqqBZcSsxh3l4zp5U9eu/atHCpa9l9+KujqIHuAXo+ups1pmQ4rabQEcYR76Ff2LXK91+PjIncjirxJyfCbkjGAaKcn58CNRdmuxT5lwAAAA==' | base64 -d | gunzip | bash
[remote]$ source ~/.bashrc # source the changed ~/.bashrc
[remote]$ hw
hello world
[remote]$ # it works!

The Importer

You can also "import" your dotfiles into the scripts directory using conditioner_import_dotfile. The next time you run conditioner_command it will generate a command that appends your dotfile contents onto the matching dotfile on the machine the command is run on.

Disclaimer

  • As with anything that involves running someone else's code on your machine, this is potentially very dangerous. Use at your own risk.
  • This was developed with and for Bash v5. I have done some minimal testing with zsh that seems to indicate that it works there as well, but no guarantees.