> For the complete documentation index, see [llms.txt](https://olb.gitbook.io/linux-essentials-certification/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://olb.gitbook.io/linux-essentials-certification/summary.md).

# Summary

* [Linux Essential Certification (LPI)](/linux-essentials-certification/readme.md)
* [Summary](/linux-essentials-certification/summary.md)
* [1.Linux community](/linux-essentials-certification/1.linux_community.md)
  * [1.1 Linux evolution](/linux-essentials-certification/1.linux_community/1.1-linux_evolution.md)
  * [1.2 Open Source applications](/linux-essentials-certification/1.linux_community/1.2-open_source_applications.md)
  * [1.3 Open Source licensing](/linux-essentials-certification/1.linux_community/1.3-open_source_licensing.md)
  * [1.4 ICT skills and knowledge](/linux-essentials-certification/1.linux_community/1.4-ict_skills.md)
* [2.Finding your way on a Linux system](/linux-essentials-certification/2.finding_your_way_on_linux.md)
  * [2.1 Command Line Basics](/linux-essentials-certification/2.finding_your_way_on_linux/2.1-command_line_basics.md)
  * [2.2 CLI Help](/linux-essentials-certification/2.finding_your_way_on_linux/2.2-cli_help.md)
  * [2.3 Directory and files listing](/linux-essentials-certification/2.finding_your_way_on_linux/2.3-directories_and_files_listing.md)
  * [2.4 CRUD on files and moving](/linux-essentials-certification/2.finding_your_way_on_linux/2.4-creating-moving-deleting-files.md)
* [3.The power of CLI](/linux-essentials-certification/3.the-power-of-command-line.md)
  * [3.1 Archiving](/linux-essentials-certification/3.the-power-of-command-line/3.1-archiving.md)
  * [3.2 Searching extracting](/linux-essentials-certification/3.the-power-of-command-line/3.2-searching-extracting-data.md)
  * [3.3 Scripting](/linux-essentials-certification/3.the-power-of-command-line/3.3-scripts.md)
* [4.Linux operating system](/linux-essentials-certification/4.linux-operating-system.md)
  * [4.1 Choosing an OS](/linux-essentials-certification/4.linux-operating-system/4.1-choosing-operating-system.md)
  * [4.2 Understanding hardware](/linux-essentials-certification/4.linux-operating-system/4.2-understanding-computer-hardware.md)
  * [4.3 Where data is stored](/linux-essentials-certification/4.linux-operating-system/4.3-where-data-is-stored.md)
  * [4.4 Networking](/linux-essentials-certification/4.linux-operating-system/4.4-your-computer-on-the-network.md)
* [5.Security and File permissions](/linux-essentials-certification/5.security-and-file-permissions.md)
  * [5.1 Basic security and users type](/linux-essentials-certification/5.security-and-file-permissions/5.1-basic-security-and-users.md)
  * [5.2 Creating users and groups](/linux-essentials-certification/5.security-and-file-permissions/5.2-creating-users-and-groups.md)
  * [5.3 File permissions and ownership](/linux-essentials-certification/5.security-and-file-permissions/5.3-file-permissions-and-ownership.md)
  * [5.4 Special directories and files](/linux-essentials-certification/5.security-and-file-permissions/5.4-special-directories-and-files.md)