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GNU acct
GNU system accounting utilities

The GNU Accounting utilities `ac', `accton', `last', `lastcomm', and `sa' add login and process accounting support to GNU/Linux. "Login accounting" provides summaries of system resource usage based on connect time, and "process accounting" provides summaries based on the commands executed on the system.


User manual available in HTML, Info, PostScript, TeX dvi, PDF, ASCII, TeXinfo from

Heckert gnu.small.png This is a GNU package:acct


Download version 6.6.2 (stable)
released on 8 November 2014

VCS Checkout



LicenseVerified byVerified onNotes
License:GPLv3orlatergenium12 January 2014

Leaders and contributors

See the '' file in the distribution for a complete list Contributor
Noel Cragg Current Maintainer
Ciaran O'Riordan Former Maintainer

Resources and communication

AudienceResource typeURI

Software prerequisites

Required to useKernel level support for process and login accounting. This is enabled in Linux by selecting the option "BSD-style process accounting" during compilation.

This entry (in part or in whole) was last reviewed on 19 April 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.