(4 dagar )

Unix Systems Administration

Description
This class provides a practical introduction to UNIX systems administration, including commonly occurring problems and suggested solutions. The training concentrates on a common approach to the different Unix variants.  

On completion, delegates will be able to:

• use responsibly the privileges of UNIX administrative user, the 'superuser'
• identify system requirements and software installation issues
• analyse hard disk partitioning/slicing and creating file systems
• alter and customise the startup sequence of a UNIX system
• manage the UNIX file system, file and directory attributes
• add and delete users whilst implementing the security principles and techniques
• set up a restricted user account
• back up and restore portions of the file system using a tar and cpio
• protect users from data loss in the event of system corruption
• set up and administer the UNIX printing service
• set up file sharing among systems using NFS and use common TCP/IP utilities
• create automated task scheduling using the cron facility (
• ( understand SVR4 kernel parameters and rebuild the kernel )
• perform simple system diagnostics
• create system recovery disks

Target & Target group
Prospective UNIX systems administrators, network administrators and support staff.  

Class Style
Practical sessions reinforce the theory taught and account for nearly half the class. They ask the user to perform typical administration functions encountered in a real networked UNIX environment, emphasising system setup and problem solution.  

Prerequisites
Delegates must have a good working knowledge of UNIX commands and utilities, which can be gained by attending our UNIX Fundamentals class. Delegates require several months of hands-on experience of a UNIX system. Typically delegate skills will include a working knowledge of such UNIX utilities as grep and find. The ability to use a generic text editor (vi), an understanding of the basic principles of UNIX shell scripts as well as a familiarity with networking concepts is required.  

Class Content

Introduction
Overview of Unix systems administration; The Unix superuser; Using su; The Unix directory structure

Review
Using common Unix utilities: grep, find, system interrogation commands

Startup and Shutdown
System run levels; Standard boot process; Configuring system startup; Shutting down a Unix system

Processes
Process creation and termination; Special processes; Looking at processes; Signalling processes; Process scheduling: cron, at and batch

User Management
Adding and removing users; Special and privileged users; User environments; Groups of users; User security; Setting up restricted users

File and Directory Security
Access control; Permission bits on files and directories; Special permission bits: SUID, GUID and 'sticky' bit;

Device Management
Unix devices; Special files; Character and block devices; Device access and naming conventions; Working with DOS diskettes

The Unix Filesystem
File system components; Creating file systems; Checking and repairing filesystems; Hard and symbolic Links

Software Management
The installation procedure; Software packages and installation tools; Allocating slices, swap and tmp files; What are packages?; Listing installed packages; Adding and removing packages

Backups
Backup media; Backup utilities: tar, cpio, dd; Backup types and strategies

Backup Techniques
Combine various tools for customised backups; Controlling tapes; Stamping backups with customised information; Performing backups across network

Printing
Adding and removing printers; Printer types, interfaces and classes; The print queue; Network printing

TCP/IP Digest
Basic network files and configuration; TCP/IP services and protocols; IP addressing and routing; Network tools: ping; ifconfig; route; netstat

Distributed Filesystems
DFS principles; File sharing using NFS; Configuring nfs server and client; Ttrade-offs of nfs

Monitoring and Tuning
System monitoring principles; Looking at system activity: sar; Tuning Unix; Kernel parameters and re-build; Creating emergency diskettes

Service Access Facility
Setting up serial devices; Managing login devices; Modem security; Port monitors

Recommended books
Class maps

English: Essential System Administration, 3rd Edition ISBN : 0596003439