There are several ways to find the service tag of a Dell server, desktop, or laptop running Linux. Here are a few options:
dmidecode command, which retrieves hardware information from the system's BIOS. To find the service tag, you can use the following command:sudo dmidecode -s system-serial-number
lshw command, which is a hardware lister that can provide detailed information about the hardware components of the system. To find the service tag, you can use the following command:sudo lshw -short | grep 'serial:'
If the system has a Dell service tag utility installed, you can use the dell-service-tag command to retrieve the service tag. This utility is not installed by default, so you may need to install it first.
Finally, you can also try checking the sticker on the system itself, as the service tag is often printed on a label affixed to the system. This label is usually located on the back or bottom of the system.