To find out the serial number of an HP network printer with a Bash shell on Linux or Unix, you can use the lpstat command with the -p option, which allows you to display information about a specific printer.
Here's an example of how you can use lpstat to find the serial number of an HP network printer:
lpstat -p printer_name | grep "serial number"
Replace printer_name with the name of your printer.
This command will display the serial number of the printer, along with other information about the printer such as its model, location, and state.
Keep in mind that the lpstat command may not be available on all Linux or Unix systems. If the lpstat command is not available, you can try using the lpinfo command, which also allows you to display information about printers.
For more information about the lpstat and lpinfo commands and their available options, you can consult their man pages or use the lpstat --help and lpinfo --help commands.