pam_env - PAM module to set/unset environment variables
pam_env.so [debug] [conffile=conf-file]
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 completely disabled.
Third it will read a user configuration file
($HOME/.pam_environment by default). The default file can be changed with
the user_envfile option and it can be turned on and off with the
Since setting of PAM environment variables can have side effects
to other modules, this module should be the last one on the stack.
Indicate an alternative pam_env.conf style configuration
file to override the default. This can be useful when different services need
A lot of debug information is printed with
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
Turns on or off the reading of the file specified by
envfile (0 is off, 1 is on). By default this option is on.
Indicate an alternative .pam_environment file to override
the default.The syntax is the same as for /etc/security/pam_env.conf.
The filename is relative to the user home directory. This can be useful when
different services need different environments.
The auth and session module types are provided.
Turns on or off the reading of the user specific
environment file. 0 is off, 1 is on. By default this option is off as user
supplied environment variables in the PAM environment could affect behavior of
subsequent modules in the stack without the consent of the system
Due to problematic security this functionality is deprecated since
the 1.5.0 version and will be removed completely at some point in the
Not all relevant data or options could be gotten.
Memory buffer error.
No pam_env.conf and environment file was found.
Environment variables were set.
Default configuration file
Default environment file
User specific environment file
pam_env was written by Dave Kinchlea <email@example.com>.