View Source: unsetenv(3) - Waikato Linux Users Group

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SETENV
!!!SETENV
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
SEE ALSO
----
!!NAME


setenv - change or add an environment variable
!!SYNOPSIS


__#include
__''name''__, const char *__''value''__, int__ ''overwrite''__);
void unsetenv(const char *__''name''__);
__
!!DESCRIPTION


The __setenv()__ function adds the variable ''name''
to the environment with the value ''value'', if
''name'' does not already exist. If ''name'' does
exist in the environment, then its value is changed to
''value'' if ''overwrite'' is non-zero; if
''overwrite'' is zero, then the value of ''name'' is
not changed.


The __unsetenv()__ function deletes the variable
''name'' from the environment.
!!RETURN VALUE


The __setenv()__ function returns zero on success, or -1
if there was insufficient space in the
environment.
!!CONFORMING TO


BSD 4.3
!!SEE ALSO


getenv(3), putenv(3),
environ(7)
----

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Last edited on Tuesday, June 4, 2002 12:24:39 am by "perry"

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