NAME

       pam_env - PAM module to set/unset environment variables

SYNOPSIS

       pam_env.so [debug] [conffile=conf-file] [envfile=env-file] [readenv=0|1] [user_envfile=env-file]
                  [user_readenv=0|1]

DESCRIPTION

       The pam_env PAM module allows the (un)setting of environment variables. Supported is the use of
       previously set environment variables as well as PAM_ITEMs such as PAM_RHOST.

       By default rules for (un)setting of variables are taken from the config file /etc/security/pam_env.conf.
       An alternate file can be specified with the conffile option.

       Second a file (/etc/environment by default) with simple KEY=VAL pairs on separate lines will be read.
       With the envfile option an alternate file can be specified. And with the readenv option this can be
       completly disabled.

       Third it will read a user configuration file ($HOME/.pam_environment by default). The default file file
       can be changed with the user_envfile option and it can be turned on and off with the user_readenv option.

       Since setting of PAM environment variables can have side effects to other modules, this module should be
       the last one on the stack.

OPTIONS

       conffile=/path/to/pam_env.conf
           Indicate an alternative pam_env.conf style configuration file to override the default. This can be
           useful when different services need different environments.

       debug
           A lot of debug information is printed with syslog(3).

       envfile=/path/to/environment
           Indicate an alternative environment file to override the default. The syntax are simple KEY=VAL pairs
           on separate lines. The export instruction can be specified for bash compatibility, but will be
           ignored. This can be useful when different services need different environments.

       readenv=0|1
           Turns on or off the reading of the file specified by envfile (0 is off, 1 is on). By default this
           option is on.

       user_envfile=filename
           Indicate an alternative .pam_environment file to override the default.The syntax is the same as for
           /etc/environment. The filename is relative to the user home directory. This can be useful when
           different services need different environments.

       user_readenv=0|1
           Turns on or off the reading of the user specific environment file. 0 is off, 1 is on. By default this
           option is off.

MODULE TYPES PROVIDED

       The auth and session module types are provided.

RETURN VALUES

       PAM_ABORT
           Not all relevant data or options could be gotten.

       PAM_BUF_ERR
           Memory buffer error.

       PAM_IGNORE
           No pam_env.conf and environment file was found.

       PAM_SUCCESS
           Environment variables were set.

FILES

       /etc/security/pam_env.conf
           Default configuration file

       /etc/environment
           Default environment file

       $HOME/.pam_environment
           User specific environment file

SEE ALSO

       pam_env.conf(5), pam.d(5), pam(8), environ(7).

AUTHOR

       pam_env was written by Dave Kinchlea <kinch@kinch.ark.com>.