Working with Access Control Lists


Access Control Lists offer extremely flexible permission management. At the same time, ACLs take some of the workload from the administrator's shoulders by shifting responsibility for access permissions to the file owner. Thanks to default ACLs and masks, the administrator still keeps control.

Data exchange remains a major problem. Because almost every operating system uses a different ACL variant, the various versions are typically incompatible or only partially convertible, so permissions are often lost in the conversion process. Administrators in heterogeneous environments therefore have to keep on their toes.


  1. POSIX ACL drafts: publications/posix.1e
  2. Konqueror:
  3. Nautilus: projects/ /

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Command Line: Access Control

    A sophisticated system of users and permissions precisely controls who has access to what on Linux. At the command line, you can define ownership with the chmod, chgrp, and chown tools.

  • Mozilla Lightning

    The Lightning add-on lets users upgrade their Mozilla Thunderbird email client and turn it into a convenient, versatile groupware product.

  • Beginners: File Control

    From the vault:This article first appeared in issue #1 (October 2000). You'll also find this article on our 10-year anniversary Archive DVD included in issue #120 (November 2010).

    With any operating system it is important to ensure that users remain in control of their files and directories and are prevented from tampering with those belonging to other users, or the system. This is what the Linux permissions system is all about, as Jono Bacon explains.

  • Workspace: OpenGoo

    The open source project OpenGoo wants to be the best web office around.

  • Web-based Groupware

    Open source groupware tools have come of age. You are no longer limited to email and an address book. Some of these tools surpass the commercial alternatives – once you get them installed.

comments powered by Disqus

Direct Download

Read full article as PDF:

032-035_acls.pdf  (240.38 kB)