$ system_profiler |grep 'Serial Number (system)' The results for this string will look something like the following: System_profiler |grep 'Serial Number (system)' On prior versions of Mac OS X like El Capitan, Yosemite, and Mavericks, the following string will retrieve the Macs serial number:

'IOPlatformSerialNumber' = 'C241BABDLLRP8' How to Get Serial Number by Command Line in Prior Mac OS X

The resulting output with serial number will look like the following: On modern versions of MacOS like Mojave, High Sierra, and Sierra, or newer, the following command syntax will retrieve the serial number from the Mac: How to Get Mac Serial Number by Command Line in Modern MacOS

Be sure the command is on a single line, as usual with command line syntax. To try this yourself and get the serial number on any Mac OS machine, enter the appropriate command string below at the Terminal, depending on the version of Mac OS X in use on the Mac. How to Get the Serial Number of a Mac from Command Line in Mac OS X

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