Screenshot: 
This project was made mainly to monitor if a backup is running on my system. It will show a red update icon on the Waybar with the number of services (backups) that are running. The infotip will show the active services and it will open a list of all the watched services with their status if clicked.
- Put the shell script inside a folder that waybar can reach. I personally use
~/.config/waybar/scripts/ - Make the script executable.
sudo chmod +x {path_to_script} - Edit the file and change the services to your own.
Note: I use foot as my terminal emulator, if you use something else, change it on the "on-click": "foot -e bash -c ... line of the module configuration.
Add "custom/active-services" to your modules at the top of the config file. Either modules-left, modules-center or modules-right
"custom/active-services": {
"exec": "~/.config/waybar/scripts/check_active_services.sh",
"return-type": "json",
"interval": 15,
"on-click": "foot -e bash -c '~/.config/waybar/scripts/check_active_services.sh --details; read -p \"Press Enter to close...\"'",
"format": "{}",
"tooltip":true,
},
Note: Since I'm using this as a running backups monitor, I chose the icon that fits. If you want something else. Simply choose another icon from Nerd Fonts on the line 55 of the script.