Install updates regularly. Don’t install software from unofficial sources. If you see a recommendation like run curl something | sudo bash, ignore it. And, in general, don’t run anything as root unless you understand what you are doing and why this cannot be done without root privileges.

Devops engineer is a role.

How often do you rebuild the image?

Unit tests? No matter where you run them, and normally this is done by CI in a prebuilt container image, so you don’t have to wait for “docker building”. Acceptance tests must be run in an environment as close to production as possible, but that’s definitely not a programmer’s job.

Most of what you enumerated is not a terminal emulator job. There is tmux for multiplexing, search and persistent sessions, for instance. And if you want image rendering, what a hell you use TUI for this? GUI programs can also be controlled with keyboard.

If you mean HTTP server, what you need is a reverse proxy and name-based virtual hosts. I usually use nginx for such tasks, but you may choose another web server that has these features.

There’s no any solution. It is impossible to convert from PDF to any editable format correctly. The exception is a “hybrid PDF” that has an embedded editable document. If you need to edit PDFs that you created yourself, store them in hybrid format.

DevOps, not programmer.

What do you want to accelerate? And for what you need more than 256 colors?

Are you serious? It’s just a window where text is printed. Use what your DE provides. Now I’m mostly on LXQt, so I use QTerminal. With tiling WMs I prefer urxvt because I don’t need builtin window splitting ans tabs. I can’t imagine what other features may I need.

Or, alternatively, [[:digit:]], and dont’ forget to add a quntifier + to match multiple digits. See documentaion for details.

awk '/^\/dev\/loop[[:digit:]]+/{print}'

No, we already have a package manager.

Nope. Free beer ≠ free speech.

#!/bin/sh
printf 'ABC %s: ' "$(date --rfc-3339=date)" | xclip

Do you really need OPNsense? Buying a OpenWrt capable router would save your money, place and silence.

Well, I don’t use proxmox, however docker coexists with libvirt and other virtualization systems. If there are overlapping networks that docker ant proxmox attempt to manage, they are configurable.

Snapshotting in docker is as easy as docker commit. After that you can back it up with docker save. Then move to another host, but not without downtime.

However normally you need to backup/move only volumes attached to containers. If that’s not the way how you like to organize your services, you likely don’t need docker.

What’s the purpose of running container in a container? Why not install docker on your host machine?

I meant software RAID of course. Hardware RAIDs just cause headacehes, but fake RAIDs that are built into motherboards are a real nightmare.

Building RAID on top of SSDs is an answer.