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Help-unsetenv cannot delete environment variables written by setenv

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Author: User
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Life-saving-unsetenv cannot delete environment variables written by setenv-Linux general technology-Linux technology and application information. The following is a detailed description. Help! Gao laigao can help
See:

Boot PROM

> Printenv
OSLoader = MEM () 0xf0000000; 0xfff80000
OSLoadOptions = quiet; quiet
OSLoadOptions =/dev/hda1

> Unsentenv OSLoader = MEM () 0xf0000000; 0xfff80000
Unrecognized command "unsentenv ".
"Help" will give a list of commands.
These three cannot be deleted. How can this problem be solved! Or where is the problem!
Thank you!
Life-saving
Life-saving

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