Index for Section 3

Alphabetical listing for C

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clearenv(3)
NAME
  clearenv - Clears the process environment

SYNOPSIS
  #include <stdlib.h>

  int clearenv(
	  void );

LIBRARY
  Standard C Library (libc)

DESCRIPTION
  The clearenv() function clears the process environment.  No environment
  variables are defined immediately after a call to clearenv(). The
  clearenv() function sets the value of the external variable environ to
  NULL.

NOTES
  AES Support Level:
      Trial use

RETURN VALUES
  Upon successful completion, the clearenv() function returns 0 (zero).
  Otherwise, it returns -1.

  If environ has been modified by anything other than the putenv(), getenv(),
  or clearenv() functions, then clearenv() will return an error and the
  process environment will remain unchanged.

SEE ALSO
  Functions: exec(2), getenv(3), putenv(3)

Index for Section 3

Alphabetical listing for C

Top of page