CLEARENV
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/?/ESeveral environment variables affect the operation of the command interpreter. Without the PATH environment variable, for example, external commands cannot be located unless they are in the current directory. Use this command with caution.
Also note the differences from other command interpreters in how the 32-bit Command Interpreter handles environment variables.
The CLEARENV command unsets (deletes) all environment variables.
SET ESET SETENV UNSETENV PRINTENV DPATH PATH LIBPATH PROMPT INPUT