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Apps Management Stuffs
There are work apps not included in elementary OS which we need to install ourselves for example LibreOffice, multimedia tools like Kdenlive, and games like TuxMath and 0 A.D. Follow this guide to get what you need: Guide to Install 20 Standard Apps on elementary OS.
We recommend Synaptic to help you manage standard apps:
$ sudo apt-get install synaptic apt-xapian-index software-properties-gtk
File Searching
To install Catfish:
$ sudo apt-get install catfish
Multimedia Stuffs
Failed playing MP4? Install codecs:
$ sudo apt-get install libavcodec-extra gstreamer1.0-libav
Desktop Theme Stuffs
Enable Dark Mode: open System Settings > Desktop > Appearance > switch from Default to Dark Mode choice > close. Note: you can also schedule when your computer switches automatically to dark mode in that settings.
Screen and Accessibility
Shrink Resolution: open System Settings > Displays > click gear button > switch resolution to one you wish > Apply > Keep This Configuration > close.
Enlarge Fonts: open System Settings > Accessibility > enable Show in Panel (to bottom left) > the accessibility button will show on top panel > click it > click plus to increase screen's font size > click minus to decrease it.
Hand Gesture Stuffs
For example, on one hand 6.0 introduces new shortcuts and on the other hand Terminal cannot be opened by our standard Ctrl+Alt+T so we can custom it.Learn shortcut keys: hold Windows key to open the shortcuts list on screen.