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A tool for dumping wtmp files and patching wtmp records
C Shell
Branch: master

Version 0.8.1

Signed-off-by: Davide Madrisan <>
latest commit b1d1497e9d
@madrisan authored


A tool for dumping wtmp files and patching wtmp records.


wtmpclean [-l|-r] [-t "YYYY.MM.DD HH:MM:SS"] [-f <wtmpfile>] <user> [<fake>]


  • -f, --file Modify instead of /var/log/wtmp
  • -l, --list Show listing of logins
  • -r, --raw Show the raw content of the wtmp database
  • -t, --time Delete the login at the specified time


wtmpclean --raw -f /var/log/wtmp.1 root
wtmpclean -t "2008.09.06 14:30:00" jekyll hide
wtmpclean -t "2013\.12\.?? 23:.*" hide
wtmpclean -f /var/log/wtmp.1 jekyll


This package uses GNU autotools for configuration and installation.

Run ./configure --help to see a list of available install options.

It is highly likely that you will want to customise the installation location to suit your needs, i.e.:

./configure --prefix=/usr

After ./configure has completed successfully run make install and you're done!

Supported Platforms

This tool is written in plain C, making as few assumptions as possible, and sticking closely to ANSI C/POSIX.

This is a list of platforms this nagios plugin is known to compile and run on

  • Linux (with kernel 3.6 and glibc 2.16.0)

Some documentation


If you find a bug please create an issue in the project bug tracker at

This tool uses some POSIX functions that are missing on some platforms: Mac OS X 10.3, FreeBSD 6.0, OpenBSD 3.8, Minix 3.1.8, mingw, MSVC 9, BeOS.

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