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NAME | DESCRIPTION | FILES | SEE ALSO | COLOPHON |
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FAILLOG(5) File Formats and Configuratio FAILLOG(5)
faillog - login failure logging file
/var/log/faillog maintains a count of login failures and the
limits for each account.
The file contains fixed length records, indexed by numerical UID.
Each record contains the count of login failures since the last
successful login; the maximum number of failures before the
account is disabled; the line on which the last login failure
occurred; the date of the last login failure; and the duration (in
seconds) during which the account will be locked after a failure.
The structure of the file is:
struct faillog {
short fail_cnt;
short fail_max;
char fail_line[12];
time_t fail_time;
long fail_locktime;
};
/var/log/faillog
Failure logging file.
faillog(8)
This page is part of the shadow-utils (utilities for managing
accounts and shadow password files) project. Information about
the project can be found at
⟨https://github.com/shadow-maint/shadow⟩. If you have a bug report
for this manual page, send it to
pkg-shadow-devel@alioth-lists.debian.net. This page was obtained
from the tarball shadow-4.19.0.tar fetched from
⟨https://github.com/shadow-maint/shadow/releases⟩ on 2026-01-16.
If you discover any rendering problems in this HTML version of the
page, or you believe there is a better or more up-to-date source
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manual page), send a mail to man-pages@man7.org
shadow-utils 4.19.0 01/16/2026 FAILLOG(5)
Pages that refer to this page: faillog(8)
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HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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