1PAM_SHELLS(8)                  Linux-PAM Manual                  PAM_SHELLS(8)
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NAME

6       pam_shells - PAM module to check for valid login shell
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SYNOPSIS

9       pam_shells.so
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DESCRIPTION

12       pam_shells is a PAM module that only allows access to the system if the
13       user's shell is listed in /etc/shells.
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15       It also checks if needed files (e.g.  /etc/shells) are plain files and
16       not world writable.
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OPTIONS

19       This module does not recognise any options.
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MODULE TYPES PROVIDED

22       The auth and account module types are provided.
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RETURN VALUES

25       PAM_AUTH_ERR
26           Access to the system was denied.
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28       PAM_SUCCESS
29           The user's login shell was listed as valid shell in /etc/shells.
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31       PAM_SERVICE_ERR
32           The module was not able to get the name of the user.
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EXAMPLES

35           auth  required  pam_shells.so
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SEE ALSO

40       shells(5), pam.conf(5), pam.d(5), pam(8)
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AUTHOR

43       pam_shells was written by Erik Troan <ewt@redhat.com>.
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47Linux-PAM                         05/07/2023                     PAM_SHELLS(8)