LESummaryVersion1To1.5

Briefing

1.0 Purpose

This document is meant to provide a higher level overview into what has changed with the objective update for the Linux Essentials exam objectives from version 1.0 to 1.5.

2.0 Changes in Linux Essentials

2.1 New commands and files

The following commands have been added to the objectives:

• type
• ip route show
• ip addr show
• host
• su
• ls -a
• /boot, /proc, /dev, /sys, /etc and /var

2.2 Removed commands

The following commands, f have been removed from the objectives:

• which
• find
• /dev/hd*
• /lib and /usr/lib

2.3 Awareness of technologies

The following technologies have been added at the awareness level:

• openSUSE, Linux Mint, Scientific Linux
• Apache HTTPD and NGINX

2.4 The Nice to Know sections

The Nice to Know sections for each objective has been removed. This has been done to remove confusion on the part of candidates as to whether they should study this material as well as for courseware providers as to whether to cover the material. The choice of additional material is left to the authors and students.

101 Change Summary

Topic 1: The Linux Community and a Career in Open Source

Objective: 1.1 Linux Evolution and Popular Operating Systems

Awareness of openSUSE, Linux Mint, Scientific Linux has been added.

Objective: 1.2 Major Open Source Applications

Development Languages has been added. Apache HTTPD and NGINX has been added. Blender, Audacity, ImageMagick has been dropped. OpenLDAP, Postfix, DNS, and DHCP has been dropped. Mobile Applications has been dropped.

Topic 2: Finding Your Way on a Linux System

Objective: 2.1 Command Line Basics

The weight of this objectives has increased from 2 to 3. The type command has been added. The which command has been dropped.

Topic 3: The Power of the Command Line

Objective: 3.2 Searching and Extracting Data from Files

The weight of this objectives has decreased from 4 to 3. The find command has been dropped.

Objective: 3.3 Turning Commands into a Script

Knowledge of shebangs (#!) has been added. /bin/sh has been changed to /bin/bash. Basic text editing has been changed to Awareness of common text editors.

Topic 4: The Linux Operating System

Objective: 4.2 Understanding Computer Hardware

/dev/hd* has been dropped. Display types has been dropped.

Objective: 4.3 Where Data is Stored

/boot, /proc, /dev, and /sys has been added. The kernel and klog has been dropped. /lib and /usr/lib has been dropped.

Objective: 4.4 Your Computer on the Network

ip route show has been added. ip addr show has been added. The host command has been added.

Topic 5: Security and File Permissions

Objective: 5.1 Basic Security and Identifying User Types

The su command has been added.

Objective: 5.3 Managing File Permissions and Ownership

ls -a has been added.

Objective: 5.4 Special Directories and Files

/etc and /var has been added.