clearenv

Clears all environment variables.

Library:LibC

Classification:Other

Service:Environment Variable

Syntax

  #include <stdlib.h> 
   
  int clearenv ( void );

If successful, returns 0. Otherwise, returns -1 and sets errno to the following:

Decimal	Constant	Description
105	ENOCONTEXT	No thread context is present.

The clearenv function removes all name-value pairs, which can affect the operation of other library functions.