Linux Admin Training
Viswa Online Trainings is one of the world’s leading online IT training providers. We deliver a comprehensive catalog of courses and online training for freshers and working professionals to help them achieve their career goals and experience our best services.
Our Linux Admin Training is how to install, configure and maintain an Enterprise Linux system in a networked environment. Basic administrative tasks are covered such as: creating and managing users, creating and maintaining file systems, determining and implementing security measures, and performing software installation and package management. Access to expert trainers and instructor-led training sessions ensures that you can easily clear your doubts and get the exact guidance that is expected from Linux Admin Online Training sessions.
Linux Admin Training Course Syllabus
✔ History of UNIX & Linux
✔ Basic Concepts of Operating System
✔ File System of Linux
✔ Creating, Removing, Copying, Moving files & Directories
✔ File Permissions
✔ Soft link & hard links
✔ Introduction to VIM
✔ Basic VIM workflow
✔ Using Grep
✔ Pipelines & Redirections Basic Regular Expressions
✔ Installation of Linux Graphically
✔ Kick Start Installation
✔ Network Installation (using ftp, NFS & HTTP)
✔ Combining kickstart & N/W installation
✔ Complete automated installation
✔ Creating & Deleting Users
✔ Modifying Users Profile
✔ Files related to User Administration
✔ Creating & Removing Groups
✔ Adding & Removing Users to Groups
✔ Applying File System Access Control List (ACL)
✔ Restricting a particular user to use a file or directory
✔ Basic SELinux Security Concepts
✔ SELinux Models
✔ Display & Modify SELinux Models
✔ Display & Modify SELinux File Context
✔ Diff type of FS like ext3,ext4,xfs etc
✔ Simple Partition & File System
✔ Managing Swap Space
✔ Increasing & Decreasing swap spaces
✔ Mounting a File system & Making it Permanent
✔ Exploring CDB and PDB databases
✔ Components of LVM
✔ Implementation of LVM Storage
✔ Creating Volume Groups & Logical Volumes
✔ Extend a Logical Volume
✔ Extending & reducing a Volume Group
✔ FS Related issues in Real-time
✔ Introduction to Networking and Connections
✔ Understanding Network Configuration Files in 6&7
✔ Assigning IP Address
✔ Using Cron jobs
✔ Restricting Users from using Cron jobs
✔ Introduction to firewall services
✔ Allowing a service/port in firewall
✔ Removing a service/port in firewall
✔ Saving and making the rules permanent in firewall
✔ Monitoring Processes
✔ Terminating & Governing Processes
✔ Setting up Priority of the Process
✔ usage of Top command
✔ Boot Process Repairing Boot Issues
✔ Real-time Boot issues
✔ Dealing with SE Linux to recover root password
✔ Recovering the Superuser Password
✔ Recovering Boot Loader
✔ Introduction to systemctl command
✔ Starting, stopping, reloading & refreshing service
✔ Managing Services
✔ Confirm Service Availability
✔ Using SSH
✔ Generating Keys
✔ Copying Pub Keys using “ssh-copyid” command
✔ Password Less Logging between two Systems
✔ Sync data between two servers using encryption
✔ Usage of dry-run in rsync
✔ Configuring SUDO
✔ Limiting SUDO Users
✔ Checking logs of SUDO users, Real-time issues & usage.
✔ Backup of data using tar
✔ Applying gzip on tar file
✔ Uncompressing tar and gzip files
✔ Using rmp command
✔ Using yum command
✔ creating yum repository
✔ configuring yum server
✔ configuring yum clients
✔ Using FTP
✔ Restricting Users for FTP
✔ Demons and workflow of NFS demons
✔ Configuring NFS server
✔ Mounting NFS Directory on Clients
✔ Automounting NFS
✔ Configuring SAMBA service for file sharing with Windows
✔ Connecting SAMBA server from Windows Client
✔ Configuring DNS server
✔ Integrating DSN server with clients
✔ Configuring Apache webserver
✔ Redirecting the website
✔ Virtual web hosting
✔ Port-Based web hosting
✔ Name-based web hosting
✔ Configuring Postfix for sending the mails
✔ Configuring Dovecot for receiving the mails
✔ Testing the mail flow
✔ Squid Proxy
✔ Configuring squid proxy for internet sharing
✔ blocking unwanted websites
✔ Changing the default port of the proxy
✔ DHCP Server
✔ Configuring DHCP server
✔ Creating scopes and ranges
✔ Client-side integration
|Live Instructor Based Training With Software|
|Lifetime access and 24×7 support|
|Certification Oriented content|
|Hands-On complete Real-time training|
|Get a certificate on course completion|
|Live Recorded Videos Access|
|Study Material Provided|
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Linux Admin Training FAQ'S
Linux Admin is an open-source operating system based on UNIX. It was named after the founder “Linus Torvalds”. He introduced Linux with the primary goal to offer an operating system at a free or very reasonable price for users. It is based on the Linux kernel and is compatible with different hardware platforms such as Intel, MIPS, HP, IBM, SPARC, and Motorola hardware platforms. Linux’s mascot, a penguin named Tux, is another popular feature. Linux offers a user-friendly environment where they can easily modify and create variations in the source code.
There are three primary components of the Linux system which are explained below.
Kernel: The kernel is the most important component of Linux. It is in charge of the operating system’s primary functions. It is made up of a number of modules that interface directly with the hardware. Kernel offers the necessary abstraction for system or application programs to mask low-level hardware information.
System libraries: They are specialized functions or programs that allow application programs or system utilities to access Kernel capabilities. These libraries implement the majority of the operating system’s functionality and do not require kernel module code access permissions.
System Utility: Programs in the System Utility category are in charge of performing specialized, individual-level activities. They are more dependable and also provide users control over the computer.
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LILO (Linux Loader) is a boot loader for Linux. It is used to load Linux into memory and start the operating system. LILO can be configured to boot other operating systems as well. LILO is customizable, i.e., if the default configuration is not correct, it can be changed. The config file for LILO is lilo. conf. LILO is also a code snippet that loads PC BIOS into the main memory at the time of starting the computer system.
It handles the following tasks:
- Locating Linux kernel
- Identifying other supporting programs and loading them in memory
- Starting the kernel
The selection of various Kernel images and boot routines is supported by LILO. For this reason, it is known as the boot manager.
The command used for this purpose would be as follows:
pr -l60 draft
Note: The default page length when using pr is 66 lines. The -l option specifies a different length.
LD_LIBRARY_PATH is an environment variable used for debugging a new library or a non-standard library. It is also used to identify the directories that need to be searched for; in order to do this, the path to search for the directories needs to be specified.
The variable can be set using the following:
It is used to search for the shared objects/dynamic libraries by the operating system for extendable functionality at runtime.