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  • Overview of Operating System
  • Types of Operating Systems
  • History of Unix / Linux
  • Flavours of Unix / Linux
  • Features of Unix / Linux
  • Architecture of Unix/Linux
  • Installation
    • Install Linux Using CD-ROM or USB Stick
    • Installing Linux using Virtual Machine
  • Boot Process
    • BIOS
    • MBR
    • GRUB
    • Kernel
    • Init
    • Runlevel programs
  • Run Levels
    • 0 – System halt i.e the system can be safely powered off with no activity.
    • 1 – Single user mode.
    • 2 – Multiple user mode with no NFS(network file system).
    • 3 – Multiple user mode under the command line interface and not under the graphical user interface.
    • 4 – User-definable.
    • 5 – Multiple user mode under GUI (graphical user interface) and this is the standard runlevel for most of the LINUX based systems.
    • 6 – Reboot which is used to restart the system.
  • File System
    • Ext
    • Ext2
    • Ext3
    • Ext4
    • JFS
    • XFS
    • btrfs
    • swap
    • Converting Ext2 to Ext3 file systems
    • Reverting back from Ext3 to Ext2 files systems
    • Understanding fdisk,e2label, mount, umount commands
    • Understanding fstab and mtab files
    • Troubleshooting
  • File System Directories
    • /bin: Where Linux core commands reside like ls, mv.
    • /boot: Where boot loader and boot files are located.
    • /dev: Where all physical drives are mounted like USBs DVDs.
    • /etc: Contains configurations for the installed packages.
    • /home: Where every user will have a personal folder to put his folders with his name like /home/likegeeks.
    • /lib: Where the libraries of the installed packages located since libraries shared among all packages, unlike Windows, you may find duplicates in different folders. /media: Here are the external devices like DVDs and USB sticks that are mounted, and you can access their files from here.
    • /mnt: Where you mount other things Network locations and some distros, you may find your mounted USB or DVD.
    • /opt: Some optional packages are located here and managed by the package manager.
    • /proc: Because everything on Linux is a file, this folder for processes running on the system, and you can access them and see much info about the current processes. /root: The home folder for the root user.
    • /sbin: Like /bin, but binaries here are for root user only.
    • /tmp: Contains the temporary files.
    • /usr: Where the utilities and files shared between users on Linux.
    • /var: Contains system logs and other variable data.
  • Linux Commands
  • File Management
    • Regular Files
    • Directories
    • Special Files
    • Files Listing
    • Creating Files
    • Displaying File Contents
    • Copying a File
    • Moving a File
    • Renaming a File
    • Deleting a File
  • Directory Management
    • Home Directory
    • Absolute/Relative Pathnames
    • Listing Directories
    • Creating Directories
    • Creating Parent Directories
    • Removing Directories
    • Changing Directories
    • Renaming Directories
    • The directories . (dot) and .. (dot dot)
  • Editors
  • User Management
    • Understanding different types of groups and creation of groups
    • Creation of users in different groups
    • Understanding Passwd, Shadow Files
    • Understanding passwd aging
    • Creation of quotas for users, groups and file systems
    • Understanding users security files
    • The different commands for Monitoring the users
    • Troubleshooting
  • Group Management
    • There are 2 categories of groups in the Linux operating system i.e. Primary and Secondary groups.
    • Command to Make a group (Secondary Group)
    • Command to Set the Password for the Group
    • Command to Display the Group Password File
    • Command to Add a User to an Existing Group
    • Command to Add User to Group Without Removing From Existing Groups
    • Command to Add Multiple Users to a Group at once
    • Command to Delete a User From a Group
    • Command to Delete a Group
  • Advanced Commands
  • Permissions
    • Introduction
    • Understanding the security permissions
    • Read, write, execute and –
    • User, group and others
    • Reading the security permissions
    • Changing security permissions
    • The octal notations
  • Partition
  • Swap Partition
  • LVM
    • What is LVM?
    • Conversion of Partition into Physical Volume
    • Creating volume groups and logical volumes
    • Mounting the logical volume filesystems
    • Extend and Reduce the logical volumes.
    • Data storage using LVM
    • Renaming volume groups and logical volumes
    • Removing physical volume, volume group and logical volume
  • Disk Quota
  • RAID
  • Package Management
  • Backup & Recovery Management
    • Understanding different types of file system backup
    • Understanding different types of files backups
    • Understanding different types of file system backups
    • Understanding different types of dump levels
    • Understanding monthly, weekly, daily backups
    • Different types of backup strategies
  • Troubleshooting


  • Introduction to Networking
  • Network File Services [NFS]
    • Understanding NFS server and NFS clients
    • Understanding daemons and files in NFS
    • Configuring NFS server and different NFS clients
    • Configuration of autofs, NFS security
  • File Transfer Protocol [FTP]
    • Understanding the features and advantages of FTP server
    • Configuring FTP server and FTP clients
    • Configuring FTP server for anonymous and real users with download and upload permissions
    • Configuring FTP user access, FTP security
    • Understanding FTP Basic Commands
    • Configuring of anonymous FTP Server
  • Proxy Server (SQUID)
    • Basics of proxy services
    • Configuring proxy services
    • Creating ACL’s for controlling access to internet
    • Understanding the features and advantages of SAMBA server
    • Configuring SAMBA for heterogeneous environment
    • Sharing the resources between unix to unix using SAMBA
    • Sharing the resources between windows to unix (vice-versa)
    • SAMBA security
  • DNS
    • Understanding DNS service and different types of DNS servers
    • Configuring DNS (master) DNS (Slave)
    • Understanding & Configuring forward (DNS) and cache (DNS)of boot phases
    • Understanding different types of files when the system is booting
    • Troubleshooting
  • Web Server [Apache]
    • Understanding APACHE
    • Configuring APACHE web server with virtual hosting
    • Configuring APACHE web server with IP BASED, HOST BASED and PORT BASED
    • Configuring member logins for APACHE web server
  • Virtual Hosting
  • Mail Server
  • Mysql Server
  • Network Information Services [NIS]
    • Basics of NIS
    • Configuring NIS Servers and client
    • Creating NIS users
  • DHCP
    • Configuring Linux as DHCP Server
    • Configuring various clients for DHCP Server
  • Firewall [iptables]
  • Selinux
  • Configuration details of different flavours


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