Digital Signage applications

Below are some digital signage applications that are free.

https://pisignage.com/

https://www.digitalsignage.com/

https://www.opensignage.com/en

https://www.concerto-signage.org/ 

Diagnostics app within ChromeOS

Starting with ChromeOS version 90, a new Diagnostics app was introduced.  To launch it, perform a search for "diagnostics".  Another method would be under About ChromeOS under Settings.  The Diagnostics app is broken up into three sections: Battery, CPU, and Memory.

Enable Function keys within ChromeOS

To enable the top keys within ChromeOS to be used as normal Function keys, access Settings -> Device -> Keyboard.  Toggle on the "Treat Top-Row Keys as Function Keys" option.

Nethogs command within Linux

The nethogs command groups bandwidth usage by process.  To install, use the command:

sudo apt install nethogs

To run the command, use:

sudo nethogs

https://www.geeksforgeeks.org/linux-monitoring-network-traffic-with-nethogs/

PowerShell one-liner to check Wi-Fi signal strength

To determine the strength of an existing Wi-Fi signal via PowerShell, use the following command.

(netsh wlan show interfaces) -Match '^\s+Signal' -Replace '^\s+Signal\s+:\s+',''

Gsudo

Gsudo is a sudo equivalent for Windows.

https://github.com/gerardog/gsudo

F-Droid

F-Droid is an app store for Android that focuses on open-source applications.

https://www.androidpolice.com/2021/04/10/f-droid-the-definitive-un-play-store/

https://f-droid.org/ 

Nzyme

 Nzyme is a WiFi Intrusion Detection System.

https://www.nzyme.org/

https://isc.sans.edu/forums/diary/WiFi+IDS+and+Private+MAC+Addresses/27288/

SnapDrop

Snapdrop is a open source application to transfer files between several platforms.

https://snapdrop.net/

https://www.howtogeek.com/721950/how-to-easily-transfer-files-between-linux-windows-mac-android-and-iphone/ 

Check for boot errors within Linux

If the Linux distro in question uses systemd, the following command should display any errors found within the last boot.

sudo journalctl -b -p err

To create a list of boot sessions, use the following command:

sudo journalctl --list-boots