# phpman > man > pam_misc_drop_env(3)

[PAM_MISC_DROP_ENV(3)](https://www.chedong.com/phpMan.php/man/PAMMISCDROPENV/3/markdown)                      Linux-PAM Manual                      [PAM_MISC_DROP_ENV(3)](https://www.chedong.com/phpMan.php/man/PAMMISCDROPENV/3/markdown)



## NAME
       pam_misc_drop_env - liberating a locally saved environment

## SYNOPSIS
       **#include** **<security/pam**___**misc.h>**

       **int** **pam**___**misc**___**drop**___**env(char** ******_env_**);**

## DESCRIPTION
       This function is defined to complement the **pam**___**[getenvlist**(3)](https://www.chedong.com/phpMan.php/man/getenvlist/3/markdown) function. It liberates the
       memory associated with _env_, _overwriting_ with _0_ all memory before **free()**ing it.

## SEE ALSO
       **pam**___**[getenvlist**(3)](https://www.chedong.com/phpMan.php/man/getenvlist/3/markdown), [**pam**(7)](https://www.chedong.com/phpMan.php/man/pam/7/markdown)

## STANDARDS
       The **pam**___**misc**___**drop**___**env** function is part of the **libpam**___**misc** Library and not defined in any
       standard.



Linux-PAM Manual                             06/08/2020                         [PAM_MISC_DROP_ENV(3)](https://www.chedong.com/phpMan.php/man/PAMMISCDROPENV/3/markdown)