GNU/Linux man pages
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GNU/Linux |
CentOS 5.4 |
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unix_chkpwd(8) |
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unix_chkpwd − helper binary that verifies the password of the current user
/sbin/unix_chkpwd [username]
unix_chkpwd is a helper program for the pam_unix module that verifies the password of the current user. It is not intended to be run directly from the command line and logs a security violation if done so.
It is typically installed setuid root or setgid shadow.
unix_pwdchk
optionally takes the following argument:
username
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The username of the user whose password you want to check: this must match the current user id. |
unix_pwdchk expects the following inputs via stdin:
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option |
Either nullok or nonull, depending on whether the user can have an empty password. |
password
The password to verify.
unix_chkpwd has the following return codes:
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1 |
unix_chkpwd was inappropriately called from the command line or the password is incorrect. | ||
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0 |
The password is correct. |
Written by Andrew Morgan
pam(8)
Emily Ratliff.
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unix_chkpwd(8) | |