To $ or To not $: Displaying Terminal Code Snippets

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It’s extremely popular to place a $ on traces which might be meant to be a command in code documentation that entails the terminal (i.e. the command line).

Like this:

$ brew set up somepackage

The purpose of that’s that it mimics the immediate that you just (might) see in your command line. Right here’s mine:

So the greenback signal ($) is slightly approach that individuals use to point this line of code is meant to be run on the command line.

Minor bother

The difficulty with that’s that I (and I’ll wager most different individuals too) will copy and paste instructions like that from that documentation.

If I run that command above in my terminal precisely because it’s written…

…it doesn’t work. $ will not be a command. How do you cope with this? You simply must know. You simply must have had this downside earlier than and in some way realized that what the documentation is definitely telling you is to run the command brew set up somepackage (with out the greenback signal) on the command line.

I say minor bother as there are all types of stuff like this in each job on the planet. Once I put one thing like font-size: 2.2rem in a weblog put up, I don’t additionally say, “Put that declaration in a ruleset in a CSS file that your HTML file hyperlinks to.” You simply must know these these issues.

Fixing it with CSS

The truth that it’s solely minor bother and that tech is laden with belongings you simply must know doesn’t imply that we are able to’t attempt to repair this and perform a little higher.

The thought for this put up got here from this tweet that received far more likes than I believed it could:

When you actually suppose it is extra comprehensible to place a $ in docs for terminal instructions, e.g.

$ brew set up buttnugget

then a UX contact is:

code.command::earlier than {
content material: “$ “;

in order that I do not copy it once I copy the command and have it fail within the precise terminal.

— Chris Coyier (@chriscoyier) Might 5, 2021

To increase on that, I’d count on you’re most likely marking up your docs one thing like:

<p>Set up bundle like:</p>

<pre><code class=”command”>brew set up bundle</code></pre>

Now you may insert the $ as a pseudo-element somewhat than as precise textual content:

code.command::earlier than {
content material: “$ “;

Now you aren’t simply saving your self a personality within the HTML, the $ can’t be chosen, as a result of that’s how pseudo-elements work. So now you’re now a bit higher within the UX division. Even when the person double-clicks the road or tries to pick all of it, they gained’t get the $ screwing up the copy-paste.

Hopefully they aren’t equally pissed off by not having the ability to copy the $. 😬

So, anyway, one thing like this unbelievable design by me:

CodePen Embed Fallback

Fixing it with textual content

Numerous documentation for code-things are on a public git repo place like GitHub. You don’t have entry to CSS to model what GitHub seems like, so whereas there may be trickery obtainable, you may’t simply plop a line of CSS in there to model issues.

We’d must (gasp) use our phrases:

Set up the bundle by getting into this
command at your terminal:

<kbd class=”command”>brew set up bundle</kbd>

Different ideas

You most likely wouldn’t trouble syntax highlighting it in any respect. I don’t suppose I’ve ever seen a terminal that syntax highlights instructions as you enter them.Eric Meyer prompt the <kbd> component which is the Keyboard Enter component. I like that. I’ve lengthy used <code> however I believe <kbd> is extra applicable right here.Tim Chase prompt utilizing a <span> and together with the immediate within the HTML so you may model it uniquely if you would like, together with making it not selectable with user-select: none;.Justin Searls has a dotfiles trick the place when you accidently copy/paste the $, it simply ignores it and runs every part after it. Jackson Bates suggests being very cautious about what you copy and paste to a terminal.I realized that $ can also be a means of denoting “unprivileged” instructions whereas # is for root instructions. A part of that cause is that when you copy-paste a root command, it gained’t run as it is going to be acknowledged as a remark.

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