The pam_echo PAM module is for printing text messages to inform user
about special things. Sequences starting with the % character are
interpreted in the following way:
The name of the remote host (PAM_RHOST).
The name of the local host.
The service name (PAM_SERVICE).
The name of the controlling terminal (PAM_TTY).
The remote user name (PAM_RUSER).
The local user name (PAM_USER).
All other sequences beginning with % expands to the characters
following the % character.
The content of the file /path/message will be printed with the PAM
conversion function as PAM_TEXT_INFO.
MODULE TYPES PROVIDED
All module types (auth, account, password and session) are provided.
Memory buffer error.
Message was successful printed.
PAM_SILENT flag was given or message file does not exist, no
For an example of the use of this module, we show how it may be used to
print information about good passwords:
password optional pam_echo.so file=/usr/share/doc/good-password.txt
Linux-PAM Manual 09/19/2013 PAM_ECHO(8)
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