UNIX/Linux: The Essentials

Course: UNIXE

Duration: 3 Days

Level: I

Course Summary

This course is intended to bring staff with little or no UNIX/ Linux experience to a level where they can confidently use a UNIX or Linux system. Building on a delegate's prior experience as a Windows desktop user, the course begins by developing an understanding of what the UNIX/Linux operating system is, and how it's file-system and commands support familiar file management activities. It then develops the concept of a command-line shell, introducing UNIX's standard input/output/error mechanism, command pipelines, and the "toolbox" command structure that these enable. The most commonly used text processing commands are discussed in detail, with realistic exercises to illustrate how and when these commands are useful. The basic features of the UNIX/Linux "power tools" such as grep, sed, and awk are also covered, including exercises that illustrate their use in analyzing or reformatting very large files such as application logs.

Delegates use either or both of the ksh and bash shells, noting the differences between UNIX and Linux, but focusing on the common features, so that the course is suitable for delegates using any of the UNIX or Linux distributions, and helpful for those who have to use more than one of them.

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Topics Covered In This Course

Welcome to the World of UNIX

Why do users choose UNIX?
An operating system
The UNIX operating system
Components of the UNIX Operating System
Organisation of a UNIX system
The Kernel
The Filesystem
The Shell
User Interfaces
Terminal based interface
The command processor
Utilities
Windows based interfaces
Using a graphical interface
Distributed environments and Client/Server
Networking

Logging On and Getting Help

Logging on
Accessing the UNIX command line
Format of UNIX commands
Getting help
Internet based help
Setting and changing the password

Navigating the Filesystem

Structure of a UNIX filesystem
Identifying files and directories
Absolute and relative addresses
The home directory
Where am I (pwd)
Moving around the filesystem (cd)
Listing directory contents (ls)
Creating directories (mkdir)
Removing directories (rmdir)
Displaying files (file)
Displaying file contents (more)
Copying files and directories (cp)
Moving and renaming files & directories (mv)
Removing files (rm)

Shell Facilities

The Shell environment
Using wildcards
Default action of the Shell
Saving output and using file input (Redirection)
Bolting commands together (Piping)
Gluing files together (cat)
Aliases

Printing

Print file
Print request
Cancel print request
Enable printer
Line printer status information

Editing Within UNIX

vi editor
Key tricks
vi modes
The vi editor for beginners
Some further useful features

Process Handling

What is a Process?
Interactive or background?
Process fork
Process, report status
Process, kill a
Allocating priority
Logging out using nohup
Sequential command lines

Additional UNIX Commands

Display date
Display a calendar
Spell checking
Word count
Grep
Regular expressions
User communications
Mail usage
Mail disposition options
Who is on the System
Write to User

UNIX Utilities

The Find Utility
Sort or merge files
sed

UNIX Security

File system permissions
Change mode
Symbolic notation
Octal notation
Change owner
Change group
Default creation mode (umask)
Backup and restore
Cpio utility
Tar utility
Pathname considerations

The Shell Environment

Shell environment
System variables
Shell variables
Assigning variables
Displaying variables values
Exporting variables
Shell interpretation
Using quotes in the Shell
The Back quote
The Single quote
The Double quotes
The Backslash
Special escape characters
Additional Korn Shell facilities

Shell Programming

Shell scripts
Executing Shell scripts
Passing arguments to a program
Positional parameters
Special Shell parameters
The Read command

What You Can Expect

Designed for technical staff that provide support for applications running on UNIX/Linux systems, or as a starting point for new UNIX/Linux system administrators, this course provides a sound understanding of the most commonly used UNIX/Linux shells, tools and utilities, with a focus on developing confidence in using the system. The course also introduces UNIX's potential for automating repetitive operations by using the shell's history and programming features.

On completing this course, a delegate can expect to be able to:

describe the main components of the UNIX/Linux operating system.
understand the typical UNIX/Linux command syntax, and appropriate use of absolute and relative path-names.
perform any kind of file-management activity including creating, copying, renaming, and setting access permissions for both directories and files.
effectively use many of the UNIX power tools for obtaining data from and processing text files.
extract files from, and create compressed archives.
use the vi editor.
use ksh and bash wildcards, variables, history, and other syntax to save typing and work more effectively.
do basic troubleshooting of UNIX/Linux and application operation and performance.
create and modify simple shell scripts.

Who Should Take This Course

This course is ideal for technical staff that have some user-level experience with mainframe or Windows systems and are finding they now have the need to work as effectively and confidently on UNIX or Linux based systems. It's also an excellent refresher for staff who find that their UNIX experience has become dated.

The material in this course is suitable for users of any of the popular versions of UNIX and Linux, including AIX, Solaris, HP/ UX, Red Hat, Suse, and Ubuntu.

Recommended Prerequisites

No prior experience with the UNIX or Linux operating system is required.

Training Style

Short lecture sessions, along with extensive hands-on workshops.

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Related Courses

Code	Course Title	Duration	Level
LNXFND	Linux Fundamentals	5 Days	I	Details
UNIXEP	UNIX/Linux: Essentials and Programming	5 Days	I	Details
SHELL	UNIX Shell Programming	3 Days	II	Details

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You can also buy "Verhoef Vouchers" to get a discounted rate for a single student in any of our public or web-based classes. Contact your account manager or our sales office for details.

Schedule For This Course
There are currently no public sessions scheduled for this course. We can schedule a private class for your organization just a couple of weeks from now. Or we can let you know the next time we do schedule a public session.

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