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Tips for getting better at Linux.

I am a Linux beginner/amateur and I have sort of had enough of copy and pasting commands I find on the internet without having a good understanding of how they actually work.

I guess my end goal is to be able to comfortably install and use arch Linux with my own customization's and be able to fix it when things go wrong.

What tips/ideas do you have for getting better at navigating the terminal, and getting a better understanding of how the os works. What is a good roadmap to follow? And how did you, advanced Linux user, get to the stage your at now?

Edit: my current distro is bazzite just in case you were interested and thanks for all the replies you are all really helpful.

115 comments
    1. You can always use man command and just read through it. If you want less text, use curl cheat.sh/command (learn how to use aliases) or the tools tldr and cheat
    2. Install the fish shell, it makes using the terminal waaay easier, out of the box.
    3. Install Alpaca flatpak, and use tinyllama or bigger LLM models. Tinyllama is already very sufficient at explaining linux commands and more, and runs fine on my reasonably powerful and modern laptop. Other models may be slow as fuck.
    4. Use the terminal only. Log out, Ctrl+Alt+F2 and login, then use some tools. 
     undefined
        
$pwd
cd
echo
ls
cat
nano
less
more
chmod
chown
#your package manager
lsblk
dd #be careful!
udisksctl
lsusb
lspci
curl
wget
...

    Note: use the man for these tools and often multiple tools do the same thing

    1. There is this online terminal game/quiz but I cant find its name.

    • Install the fish shell, it makes using the terminal waaay easier, out of the box.

      Not a good idea if the goal is to learn more about Linux. Fish is not compatible to and is different to Bash in some ways, that it would be hard once not using Fish. Also getting help or sharing scripts with others will be problematic, when having a problem and researching it. For someone coming in to Linux and wanting to learn about it, I highly recommend to learn about Bash first and use it at least for months before even thinking about a custom shell. I used Fish too (and I miss some features), so its not like I wouldn't know what it is.

      Install Alpaca flatpak, and use tinyllama or bigger LLM models.

      Alpaca is nice. GPT4All is also another one (and one that I prefer). Either way, both are good. But again like previous point, I do not recommend to install and use Ai modesl (LLMs) to learn about Linux and to get used to it. Especially the smaller models often hallucinate and lie with false claims. If you don't know it better and are currently learning, this could be a problem. I highly discourage from installing and learning with an Ai model alongside when you are new to a topic like Linux. Its also not like there wouldn't be enough good material out there anyway.

      • Fish is just a shell, you can still write and execute bash scripts

        Fish is rewritten in Rust btw

        Also the syntax is waay better, it should totally replace bash

    • I just learned about Fish from another Lemmy post and here it is again!

      https://discuss.tchncs.de/post/27617255

  • Just don't copy paste the commands. Really! Just take the time to understand what the command does, read the manual, and rewrite it yourself instead of pasting it. That alone will help a fair bit and can start guessing what it should be.

    After a while of doing that it stops being a "paste this command to make the service run" and becomes "ask systemd to enable and start the service". You start associating editing files in /etc with "will probably need to slap a sudo in front of that one", you start mentally replacing nano/vi/vim/emacs/nvim/sed with your preferred way of editing the file, because you absorb the concept of "this command edits a text file".

  • I guess my end goal is to be able to comfortably install and use arch Linux with my own customization’s and be able to fix it when things go wrong.

    What tips/ideas do you have for getting better at navigating the terminal, and getting a better understanding of how the os works. What is a good roadmap to follow? And how did you, advanced Linux user, get to the stage your at now?

    You learn by doing and by failing. Like we learned to walk, to write, to drive, to kiss, to speak a foreign language, or even to lace our shoes (and, yep, even that was a heavy trial and error process for toddler-us back then).

    • Install Arch (in a VM, maybe) and while doing so read the Arch Wiki to understand each step, each action and the role of each app you're asked to install. The Arch Wiki is an impressively well done documentation.
    • Be fine knowing that it will take time to learn anything new (not just Arch, anything), you won't get good at it the first time. Don't rush it, take your time.
    • Be fine knowing that you will face issues and will most likely fail at some point, be it to instal Arch or in doing whatever new. There is no other way to learn, for all of us, than by failing and then trying again, over and over. Once again like we learned to walk (by falling on our butt), to lace our shoes (by making a mess) or to kiss (by not doing it great at first).

    Learning takes time and efforts. Perseverance, and humility. There is no shortcut to learning anything that is worth learning, not just Arch. But the reward is also so much worth it. Einstein had to learn calculus, Da Vinci had to learn how to hold a paint brush, and Tolstoy like Flaubert had to learn to write and I'm willing to bet they all made mistakes while they were learning their respective craft.

    Even without referring to geniuses: the first time I tried to install Arch I ran away screaming and swearing I would never touch that thing again. The second time, I had already managed to read a good chunk of the relevant part of the wiki and used it constantly at each step of the process. I still failed at it but at least I understood why I failed and I felt incredibly more... in charge, despite me failing. The third time, I managed to have it running, and to install most the packages I wanted. That was great. There was no fourth time as, as much as I love Arch (which is a lot), I quickly realized using it that constant updates were not what I wanted from my OS and apps (I'm an old-ish user with very basic needs, I'm not even that much of a geek to be honest). So, I switched to the complete opposite of Arch (Debian, another great love of mine I must say). Still, learning and using Arch taught me a lot about Linux in general and about... myself.

    • To learn Arch, install it from scratch (without archinstall), it'll force you to read the Wiki and learn a lot of necessary commands in the process. After the installation, just keep using it. Using a Linux distro full-time as the only installed OS is the best way to keep at it and truly learn it over time. There's no magic bullet here. Just keep using it and solving problems or issues as you go, learning more and more stuff as you go. If you need other OSses as well, run those in a VM. I don't recommend dual-boot setups.
    • Don't blindly copy/paste commands you don't understand. Always try to understand them first. Some commands can be very disruptive or even destroy your configuration. If you don't understand it or are able to adapt it so that it fits to your particular configuration or system, you can EASILY damage a configuration, or even make your system unusable. Also, some people like trolling other people and deliberately share harmful commands. Generally, test potentially destructive commands or complex commandlines before actually running them.
    • Document major config changes that you do. This is useful because you'll be able to undo certain changes or even replicate your current system configuration fast when you change distros or have to reinstall in the future. For example my current Arch-based setup is fully documented in form of an almost-directly executable shell script. It does require some interactions but very little. If I ever have to reinstall this system, or upgrade my hardware, it can be done insanely fast and it'll have the exact same configuration. This goes from basic partitioning and encryption all the way up to dotfiles and individual program configurations.
    • Don't feel the need to learn hard/advanced tools like Vim or Emacs unless you really think you're getting an advantage from that and aren't hesitant to put in the time and effort to learn them. Most people don't need to use them. They're amazing tools but you need to be prepared to lose quite a lot of time to learn them before you can become productive with them, and this might not be a tradeoff that's useful for every single user. You can also get away with much simpler tools, like nano (as a console-based editor) or whatever programmer's text editor you want.
    • Similarly, whether a pure WM or compositor plus assorted tools compared to a full desktop environment is worth it for you or not, is up to you. There's no wrong or right answer here. I've tried out pretty much everything and these days use KDE Plasma because I like the consistency and integrations and dislike having different, inconsistent stand-alone tools for panels, menus, notifications, wallpaper, file manager and so on. But again, there's no wrong or right answer here. Just what makes more sense for you. It's worth learning how to be able to configure and use a minimalistic setup, for sure. So trying it out doesn't hurt and increases your knowledge overall. In general, in the Linux world it's good to always know enough to not be screwed once some component suddenly doesn't work anymore. For example, a competent Linux user should be able to deal with (temporarily) not having a GUI and fixing his system via commandline.
    • A minimalistic, DIY distro like Arch can be amazing to learn everything, if you want to do that at least. If you just want a working desktop system with as little effort as possible, then don't do that. But if you intend to learn every detail, then a distro like Arch is better suited for that goal than a "bloated", fully pre-configured distro like Mint or Ubuntu is. Because Arch is much simpler on a technical level than those are. It's much easier to understand e.g. the relatively simple package building process on Arch than it is on Debian/Ubuntu-based distros. But this "simple" explicitly refers to technical simplicity or minimalism. Most users expect something else when they hear "something is simple". Arch is not simple as in beginner-friendly, but it is simple in terms of technical complexity, which is why many advanced users and tinkerers like it because it doesn't stand in their way. It also means though that you HAVE to learn many things, e.g. how to configure a firewall, because it doesn't come with any preinstalled by default. With Arch, the admin is supposed to know about everything and configure every component himself, at least on a somewhat basic level.
    • If you want to go to even more details, you could also try out a source-based distro like Gentoo or Crux, which can also be a great learning experience, but it's even more details regarding compilations of each package, dependencies, compile-time options, etc. you have to deal with than with a minimalistic binary-package-based distro like Arch, so whether that's useful for you or not is up to you of course.
    • While we're at it: LFS (Linux from Scratch) is not a distro per se, it's a guide on how to build your own distribution from scratch. It's VERY time intensive and not recommended unless you truly want to learn how to build a complete distribution from scratch, or maybe start your own distro some day which isn't based on another existing distro.

    • documented in form of an almost-directly executable shell script

      I'm annoyed with myself for not thinking of doing this

  • More than anything, what leveled up my Linux knowledge was switching to Gentoo back while I was in college.

    Before that, I used SuSE, and I switched specifically because I felt like I wasn't learning anything really about Linux just by using point-and-click tools like YAST.

    I've used Arch for the last... 7-ish years? (Though now I'm basically in the process of switching back to Gentoo. In terms of learning Linux, Arch is... close to as good as Gentoo for that purpose. Not quite as good, but pretty close.)

    As for the best approach for learning, though, you know how they say the best way to learn a language is "immersion"? As in, to move to where they speak the language. In the same way, if what you're going for is to learn, just take a dive. Install Arch over top of your current OS and don't look back. Just commit to it.

    Also, use the most minimal stuff you can. Skip KDE and use dwm. Skip the login manager and start your GUI from the command line. Don't install a file manager and instead use Bash directly. (It's more than capable.) Don't install anything you can do instead with a Bash one-liner or a small Bash script. If after you've gotten pretty used to minimal stuff you still want something that the heavier alternatives offer, you can of course switch, but if your aim is to learn, avoid using the kind of stuff that tries to be "user friendly" by hiding all the internal implementation details from you. (Instead use the stuff that is user friendly by virtue of having so few moving parts that understanding how it works under-the-hood is trivial.)

    And, don't settle for "it's fucked beyond repair." If it's fucked, google your ass off. If that doesn't work, ask on the official Arch forums or here or wherever. (Don't worry, they don't bite.)

  • For one, stop copying and pasting commands and start learning about the basics of the shell.

    Here's a basic tutorial from UC Berkeley: https://computing.stat.berkeley.edu/tutorial-using-bash/

    Things you'll want to focus on:

    1. Delimiters
    2. Syntax (Bash by default, but the syntax for whatever your chosen shell is)
    3. Switches
    4. Path (absolute and relative)
    5. Operators (Pipe will become one of your most heavily used)

    Then once you learn to do some basics, I would hammer repetition. Just force yourself to do things you would usually do via GUI by command line. I started with the basics of updating my system way back in the day with sudo apt-get update && upgrade

    Just type type type type all those commands until remembering them is muscle memory.

    • Just type type type type all those commands until remembering them is muscle memory.

      For learning purposes, also try not to use aliases. Because using alias would undermine the learning process of knowing what and how its been done. I recommend (as you said) typing it out over and over again and use aliases on a later stage of your Linux learning only (maybe after weeks at least).

      • Exactly, shortcuts like aliases or tab completion really should be saved for after you've familiarized yourself, so you're less likely to make a mistake or tab complete to the wrong command etc.

  • What tips/ideas do you have for getting better at navigating the terminal, and getting a better understanding of how the os works

    Running an OS as a virtual is liberating. Dive in, make mistakes, fix them (or not and have to reinstall or redo from the last save). No real consequences for exploring.

  • My advice would be look up The Missing Semester it’s a free online MIT course on how to use the terminal and it will govern you a better understanding of how to use it and Linux more generally. Really helpful to find your way around and give you an intuitive sense of what you’re trying to achieve.

    Then beyond that installing arch is easy with archinstall but it’s probably more helpful to learn about the components of desktop Linux and what they do so that you actually know what you’re doing.

  • If you're in the position to take certificates then that's a another way of learning a lot. At least it has worked for me. I've over the last half year taken RHCSA and RHCE from RedHat - though paid by work. Theses in specific are expensive, but I'm sure there are other ones that are cheaper. This would also allow you to 'show off' your skills in an official way should you need to, for applying for certain jobs etc..

    I at least find this way to be helpful as you have to motivate yourself to learn and pass an exam to get the certificate. It might not be for everyone though.

  • on the tailend of a convo in in a discord recently I added a command to the "customize chatgpt" section to allow chatgpt to have a custom "man" like command similar to linux, but that works for all code or commands.

    This makes chatgpt give me a Linux command or code snippet formated in a table explaining what each piece of the command does.

    when a prompt is givin beginning with the word man followed by code or commands please respond with a table following these rules and nothing else: skip title row, No backticks around command components, No unnecessary rows, column 1 should contain the command component, column 2 should contain a brief command description

  • I learned a lot by using a less common distro (solus). When I would have a problem, the solutions I could find on forums or arch wiki wouldn't apply to my distro directly, and I would have to look into the solution for long enough to understand what needed to change in order for the solution to work.

    You can probably do this on any distro, just by not using commands you find online until you understand what they're doing and why that might fix your problem. Arch wiki is a great resource for any distro, even though it won't always be accurate for the distro you're on.

115 comments