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nvram

Manipulate firmware variables. More information: https://ss64.com/osx/nvram.html.

[p]rint all the variables stored in the NVRAM:

nvram -p

[p]rint all the variables stored in the NVRAM using ML format:

nvram -xp

Modify the value of a firmware variable:

sudo nvram {{name}}="{{value}}"

[d]elete a firmware variable:

sudo nvram -d {{name}}

[c]lear all the firmware variables:

sudo nvram -c

Set a firmware variable from a specific ML [f]ile:

sudo nvram -xf {{path/to/file.xml}}