linux administration & shell scripting

UNIX/LINUX Basics:
Essentials

Overview of UNIX

History of Linux

Linux architecture
 Kernel
 Shell

Understanding Linux commands
 Displaying system date and time : date
 Displaying present and working users : who and whoami
 Calculator : bc
 Machine characteristics : uname
 Knowing a terminal : tty
 Displaying a calendar : cal
 Displaying a message : echo and printf

Files system
· Linux file Hierarchy Concepts
· Listing files and directories : ls
· More and less command
· The seven Fundamental File types
· Creating and viewing the files : cat
· Create, Modify, Change and Removing directories
· Moving and renaming files : mv
· Copying a files : cp command with attributes
· Links – Hard Link and Soft Link
· Absolute path name , Relative path name

Comparisons
 Cmp
 Diff

Compressions
 zip
 compress
 gzip
 bzip2

File attributes
 chmod
 chown
 chgrp

Filter commands
 which, whereis, locate
 find commands with attributes

String Processing
 head, tail
 wc, sort, uniq
 cut, paste

String Processing with regular expressions
 sed
 grep

process
 introduction Process concepts
 process basics
 process commands

Job control
 at, batch, cron

Shell
 Configuring shell
 Variables
· Local variable
· Environment Variable

Shell startup scripts
 Login shell
 Non – Login shell

Vi editor
 Overview of vi editor
 Three modes of vi editor
 Saving and quitting
 Navigation
 Editing a text
 Undoing changes
 Yank and paste
 Changing, Deleting
 Searching for pattern , Search and Replace
System Administration

RedHat installation (Text and Graphical Mode)
 Standalone Installation
 NFS Installation
 Kickstart installation

User and Group Management
 Creation of users and Groups
 Understanding /etc/passed,/etc/group,/etc/shadow and /etc/gshadow
 Switching accounts :su
 Sudo
 Password aging policies
 Creation of quotas for user groups and files systems

File System Management
 Disk portioning
 Managing partitions
 Understanding file system
 Creating file system ext2 to ext3 & ext4
 Reverting file system
 Understanding virtual file system
 Managing a data with mount command
· Mounting File system
· Mounting CD/DVD’s, USB, and Floppys.
 Understanding and Configuring /etc/fstab and /etc/mtab

System Initialization
 Boot sequence overview
 Bios initialization
 Boot loader
· Grub boot loader and grub.conf configuration file
· Trouble shooting of grub boot loader
 Kernel initialization
 Init initialization
 Run levels (0-6)
 Virtual Consoles
 Controlling services
 System shutdown and reboot

Kernel services
 Kernel overview
 Kernel hardware support
 Configuring kernel parameters

Network Configuration
 Configuring Network Utilities
· Netconfig, setup, neat and with configuration file
· Ifdown,ifup, ifconfig,ping
· Binding multiple address
· Configuring range of ip –address
· ssh, telnet
· rcp/scp

xinetd services
 overview of xinetd services and non xinted services
 configuring xinetd services

RPM
 Overview of RPM
 Installing, Removing a software with rpm
 rpm queries
 rpm verifications

YUM
 Overview of YUM
 Installing, Removing a software with YUM
 YUM queries
 YUM verifications

printing and Administration Tools
 Configuring a standalone printer
 Configuring a Network printer
· Ipd
· Cups

LVM’S (Logical Volume Manager)
 Overview of LVM’S
 Creation of physical volume
 Creation of logical partition
 Extending the Vol group
 Extending the logical partition
 Removing Vol group and logical partition

RAID
 Overview of RAID
 Types of RAID
 Configuring RAID 0,1 and 5

Backups
 Understanding of different backups
 Taking backups with dump/ restore .cplo.tar/star
Network administration and security services

NFS services
 NFS overview
 NFS advantages and disadvantages
 Configuring NFS server
 Configuring NFS client
 Configuring NFS client with /et/fstab file
 Configuring NFS Client with Autmount services

FTP services
 FTP Overview
 Configuring FTP server and FTP client
 Configuring FTP server for anonymous users and real users
 Securing FTP server

SAMBA services
 Overview of SAMBA
 Installing and configuring samba server
 Configuring samba server with heterogeneous platform
 Configuring samba shares between UNIX- windows vice –versa
 Configuring SAMBA shares with different level of security

DNS
 Understanding DNS Services
 Configuring types of DNS
· Primary DNS
· Secondary DNS
· Forwarder and cache DNS

Configuring Web Server with APACHE services
 Apache overview
 Apache configuration
 Virtual Hosts
 Configuring IP- based , Name based and Port based.
 Configuring member logins for web server

NIS (Network interface system)
 Overview of NIS
 Configuring NIS Master and Slave Server
 Configuring NIS Client
 Configuring NIS with NFS servers

DHCP
 Overview of DHCP services
 Configuring DHCP server
 Configuring DHCP Client in heterogeneous platform

Proxy server with Squid service
 Configuring SQUID services
 Configuring ACL’s in SQUID

Securing data
 Digital certificates
· Creating certificates for IMAPS
· Creating certificates for users

E-Mail services
 Overview of email
 Configuring sendmail service
 Configuring webmail access with squirremail services
 Configuring a dovecot services
 Configuring mail client with mutt.