Personally I use Bash for scripting. It strikes the balance of being available on almost any system, while also being a bit more featureful than POSIX. For interactive use I bounce between bash and zsh depending on which machine I’m on.
Do you write #!/bin/bash or #!/bin/sh?
I start my shell scripts with #! /usr/bin/env bash. This is the best way of ensuring that the same bash interpreter is called that the user expects (even if more than one is present or if it is in an unusual location)
Do you have two folders, one for proven commands and one for experimental?
By commands, do you mean bash scripts? If so, I put the ones I have made relatively bulletproof in ~/bin/, as bash usually makes them automatically on the path with this particular folder name. If I’m working on a script and I don’t think it’s ready for that, or if it goes with a specific project/workflow, I will move it there.
Do you sync the folder between your server and your workstation?
No. I work on lots of servers, so for me it’s far more important to know the vanilla commands and tools rather than expect my home-made stuff to follow me everywhere.
good practice? general advice?
Pick a bash style guide and follow it. If a line is longer than 80 characters, find a better way of writing that logic. If your script file is longer than 200 lines, switch to a proper programming language like Python. Unless a variable is meant to interact with something outside of your script, don’t name it an all caps name.
is it bad practice to create a handful of commands like podup and poddown that replace podman compose up -d and podman compose down or podlog as podman logs -f --tail 20 $1 or podenter for podman exec -it “$1” /bin/sh?