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ExplainShell

Paste a terrifying shell command and it pulls the whole thing apart, annotating every flag from the relevant man page.

Opens in a new tab. We do not control this site and it may have changed since we catalogued it.

How to get the most from it

ExplainShell sits in Unreasonably Useful under Learn, filed as instant.

  • Just open it. It pays off within seconds, with nothing to read first.
  • Use a laptop or desktop computer — we file it as desktop only.
  • It works with the sound off, so it is fine on a train or in a quiet office.
  • No account needed — you can start without signing up.
  • Go in expecting something brainy and useful.

About this category: Sites that quietly do a job you would otherwise pay for or install software for. Included because being this good for free is genuinely strange.

Good for

  • A five-second distraction
  • Giving your brain a workout
  • Getting something practical done
  • A quiet break at your desk
  • Trying it with zero commitment

ExplainShell: quick answers

Is ExplainShell free?

Yes. ExplainShell is free to use and needs no account.

Do I need an account to use ExplainShell?

No. You can use ExplainShell without signing up for anything.

Does ExplainShell work on a phone?

Not well. We file ExplainShell as desktop only, so open it on a laptop or desktop computer.

Is ExplainShell safe for work?

Yes, we file it as safe for work. It also works muted.

How long does ExplainShell take?

We file it as "Instant": Good within five seconds of loading.

More in Unreasonably Useful

All 15 in Unreasonably Useful
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  • Merge, split, compress, rotate, sign and convert PDFs from a single page. Covers nearly everything Acrobat charges a subscription for.

  • A big set of free PDF tools in the browser: merge, split, compress, convert and sign documents without creating an account first.

  • Builds a regular expression while explaining every token in a side panel and highlighting matches as you type. Ends a lot of guessing.

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