pam_misc_setenv 3 Linux-PAM Manual pam_misc_setenv BSD like PAM environment variable setting #include <security/pam_misc.h> int pam_misc_setenv pam_handle_t *pamh const char *name const char *value int readonly This function performs a task equivalent to pam_putenv3 , its syntax is, however, more like the BSD style function; setenv(). The name and value are concatenated with an '=' to form a name=value and passed to pam_putenv(). If, however, the PAM variable is already set, the replacement will only be applied if the last argument, readonly, is zero. pam_putenv3 , pam8 The pam_misc_setenv function is part of the libpam_misc Library and not defined in any standard.