Useful tips for everyday
How do I add description to Gmail? Add or change a signature Open Gmail. In the top right, click Settings. See all settings. In the…
How do I know if I am running as root in bash? As @wrikken mentioned in his comments, id -u is a much better check…
What is a rotation gate? The Ry gate is one of the Rotation operators. The Ry gate is a single-qubit rotation through angle θ (radians)…
How do you create a layered map? Maps are created with one layer, but you can have up to 10. On your computer, sign in…
Can Singleton have parameters? Implementation Type A singleton allows access to a single created instance that can be: passed as a parameter to other methods,…
When to use ffmpeg to concatenate multiple MP4 files? FFmpeg can concatenate multiple mp4 files into a single mp4 file – without any intermediate steps,…
What could go wrong Murphy law? Murphy’s general laws Anything that can go wrong will go wrong. If there is a possibility of several things…
How do I access encrypted drive on Mac? To unlock and access the startup disk’s FileVault-encrypted data: On the client Mac, start up from macOS…
Are all optical drives the same? The optical mechanisms for reading CDs and DVDs are quite similar, so the same lens can be used for…
How do I start and stop Pulseaudio? Stopping PulseAudio Note: PulseAudio restarts automatically when you restart you machine, but you can prevent this by navigating…