1UNIX_CHKPWD(8) Linux-PAM Manual UNIX_CHKPWD(8)
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6 unix_chkpwd - Helper binary that verifies the password of the current
7 user
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10 unix_chkpwd [...]
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13 unix_chkpwd is a helper program for the pam_unix module that verifies
14 the password of the current user. It also checks password and account
15 expiration dates in shadow. It is not intended to be run directly from
16 the command line and logs a security violation if done so.
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18 It is typically installed setuid root or setgid shadow.
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20 The interface of the helper - command line options, and input/output
21 data format are internal to the pam_unix module and it should not be
22 called directly from applications.
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25 pam_unix(8)
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28 Written by Andrew Morgan and other various people.
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32Linux-PAM Manual 09/19/2013 UNIX_CHKPWD(8)