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uefignu-efi

Return value from efi application to efi shell

I’m running an efi application from the startup.nsh in efi shell. How can I get a value as return of the application to the shell and use it in the shell script?

Solution

  • Use the lasterror variable, which contains the return value of the last program.

    See more about scripting in chapter 4 of the UEFI Shell Specification (2.2).