---
title: "macos | Today I Learned | OOZOU"
description: "Short, practical macos notes from the OOZOU team."
canonical: https://oozou.com/til-topics/macos
locale: en
---

# macos | Today I Learned

> Short, practical macos notes from the OOZOU team.

- [Add a macOS-style drop shadow to your "partial" screen captures or plain-bordered images](https://oozou.com/til/add-a-macos-style-drop-shadow-to-your-partial-screen-captures-or-plain-bordered-images-153) ([markdown](https://oozou.com/til/add-a-macos-style-drop-shadow-to-your-partial-screen-captures-or-plain-bordered-images-153.md)) (2021-08-20): By default, and like it or hate it, the macOS keystrokes to capture full app screen (⇧- ⌘- 5) will add a subtle drop shadow around your saved image.  This can make it more visually appealing when…
- [Convert SVG to PNG](https://oozou.com/til/convert-svg-to-png-79) ([markdown](https://oozou.com/til/convert-svg-to-png-79.md)) (2020-11-07): On MacOS, install inkscape (with brew) and use it like this:
- [Add spacers to your macOS app dock to make groups](https://oozou.com/til/add-spacers-to-your-macos-app-dock-to-make-groups-27) ([markdown](https://oozou.com/til/add-spacers-to-your-macos-app-dock-to-make-groups-27.md)) (2020-10-13): Open term (or equivalent) and paste the following one-liner:
- [Change system names on macOS](https://oozou.com/til/change-system-names-on-macos-16) ([markdown](https://oozou.com/til/change-system-names-on-macos-16.md)) (2020-10-13): From term (or equivalent), copy and paste:
- [Chrome tab manipulation](https://oozou.com/til/chrome-tab-manipulation-38) ([markdown](https://oozou.com/til/chrome-tab-manipulation-38.md)) (2020-10-13): Sometimes I want to go back to the last page I viewed while still keeping the same one open. You can very easily achieve this with shortcuts
- [Cleanup stale formulas on brew](https://oozou.com/til/cleanup-stale-formulas-on-brew-4) ([markdown](https://oozou.com/til/cleanup-stale-formulas-on-brew-4.md)) (2020-10-13): Use brew cleanup to get some spaces back!
- [Get the password of the wifi you're on](https://oozou.com/til/get-the-password-of-the-wifi-you-re-on-9) ([markdown](https://oozou.com/til/get-the-password-of-the-wifi-you-re-on-9.md)) (2020-10-13): password: "!forHackers" `
- [My most used slack shortcuts](https://oozou.com/til/my-most-used-slack-shortcuts-49) ([markdown](https://oozou.com/til/my-most-used-slack-shortcuts-49.md)) (2020-10-13): ⌘-K(or T) to open the channel switcher (I navigate channels solely with this shortcut and have my slack set to hide all channels without new messages)
- [Reset Postgres table sequence after DELETE](https://oozou.com/til/reset-postgres-table-sequence-after-delete-66) ([markdown](https://oozou.com/til/reset-postgres-table-sequence-after-delete-66.md)) (2020-10-13): When deleting recent records from a table, you can reset it's sequence counter if auto-increment field continuity is important to you. Consider actions on the following table, users:
- [Use FFmpeg and Apple Script to compress videos](https://oozou.com/til/use-ffmpeg-and-apple-script-to-compress-videos-12) ([markdown](https://oozou.com/til/use-ffmpeg-and-apple-script-to-compress-videos-12.md)) (2020-10-13): Build an application you can drag-and-drop videos onto to compress them significantely:

All notes: [Today I Learned](https://oozou.com/til) ([markdown](https://oozou.com/til.md)).

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