Linux: unpacking ONSemiconductor.RSL10.3.7.606.pack SDK without Eclips/Keil/IAR IDE

Hello,
I like to evaluate the RSL10 SDK for a new project but I don’t want to install any IDE (as I never use one).
However I can’t seam to find a way to unpack the SDK without one of the three mentioned IDE’s.
Is there a command line tool I can use?
Thanks.

@2old4this

CMSIS Packs are simply .ZIP files renamed with the extension .PACK

They can be opened and extracted with most archive software (WinRAR, WinZIP, etc).