JPKCom DB

Cheat Sheets — Examples

Hands-on walkthroughs with the Cheat Sheets: look up a git command, find a sheet, filter commands, copy a snippet, and share it via a deep link.

Back to the overview: Cheat Sheets · Open the tool live: www.jpkc.com/tools/cheatsheet/

The manual explains every feature in detail. This page adds concrete workflows — typical lookup situations, step by step.

Example 1: Look up a git command fast

The classic — you want to undo a commit and can't remember whether it was reset or revert.

  1. Open the Cheat Sheets. The Git sheet is already loaded by default.
  2. Type a keyword into the Search field, e.g. revert. The command list filters live, sections with no match disappear, and the counter updates to the number of still-matching commands (format X / N commands).
  3. Read the matching entry — command, short description, and (often) an example. Click the clipboard icon and the command is on your clipboard.
  4. In the terminal, replace the placeholder (e.g. <commit> with the real hash) — done.

The keyword doesn't have to be a command name: because the search also runs over the descriptions, you can find the right git command via a word like stash or undo if it appears in the description.

Example 2: Find the right sheet when you're unsure of the tool name

You want to synchronize files but aren't sure whether the tool is rsync or something else.

  1. Click the Cheat Sheet dropdown at the top. The category-grouped list of all 219 sheets opens.
  2. Type a fragment into the search field (Search cheat sheets…), e.g. sync. The list narrows to matching sheet names; categories with no match are hidden.
  3. Navigate with Up/Down arrows and confirm with Enter — or click directly. The sheet loads.

Alternatively, browse the categories: looking for something about backups, you'll find rsync, restic, rustic, BorgBackup, Rclone, and more side by side under Remote & Backup — handy for comparing alternatives.

Example 3: Search a Docker sheet precisely

You need the syntax to inspect a running container.

  1. Pick Docker from the Cheat Sheet dropdown (or open /tools/cheatsheet/#docker directly).
  2. Instead of scrolling, type logs or exec into the Search field. The list shows only the matching commands.
  3. If you'd rather get an overview of a whole topic block, use the Section dropdown and jump straight to the section — the page scrolls there smoothly.
  4. Copy the command you want via its clipboard button.

Remember: command search and section jump are two routes to the goal — the search is faster for a known keyword, the Section dropdown is better when you want to skim a topic.

Example 4: Copy a snippet and use it cleanly

You want to take over a ready-made example, not just the bare command.

  1. Find the entry (e.g. ssh-keygen in the ssh sheet).
  2. Many entries have their own syntax-highlighted example block below the description with a real invocation. Next to it sits a second clipboard button — it copies the example, not the generic command line.
  3. Paste it in the terminal and just adjust the specific values (path, hostname, file name).

The distinction pays off: the upper button copies the generic syntax with placeholders (<…>), while the button on the example copies a filled-in, runnable invocation you only need to tweak.

You're explaining something to a colleague and want to send them exactly the right sheet.

  1. Pick the sheet (e.g. nginx). The address bar now shows …/tools/cheatsheet/#nginx.
  2. Copy that URL and pass it along — when they open it, your colleague lands straight in the nginx sheet, no searching needed.
  3. For sheets you use often, a bookmark on the hash link pays off. Next time you jump in with a single click.

Handy: because the hash is set without a new history entry, switching between sheets doesn't clutter your back button.

Example 6: Skim a new tool instead of reading the man page

You hit restic for the first time and want to get a feel for what it does in two minutes.

  1. Load the restic sheet.
  2. Leave the search empty and open the Section dropdown — the section titles (e.g. Repository Initialization, Creating Backups, Listing Snapshots, Restoring Data) are a mini table of contents for the topic.
  3. Jump through the sections in order. You see the typical steps in their logical sequence — more compact than any man page, but with real examples.

That's where the sheets shine for learning: they show not every option but the ones you actually need day to day — in a structure you take in at a glance.

Going deeper: the manual for every feature and the data structure, the tips & tricks for knacks and pitfalls. You can try all of it right in the tool.