System Admin Course

Introduction of Linux, Basic Networking concepts, About proprietary and Open source software, Duties of system administrator and Linux engineer. VI and VIM editor, Installation VirtualBox Vmware and Oracle Virtual Machine, Installation of Linux Minimal and Graphic User Interface (GUI).

Linux Directory Structure, Define structure of directory and there uses, about root user and normal user, remote connectivity using Putty, Kitty, mobaxterm, VNC, RDP. CLI and The Shell, create and Edit text file and Directory.

Linux Boot process from powering on machine, Linux Boot Components, Identifying Boot Components, Grub boot loader, systemctl domain, init targets, Service management, Booting in rescue mode, single user mode, recover root password, setup grub password.

Disk Partitioning,formatting the harddisk, Linux filesystem type ( ext2, ext3, ext4, xfs …), mounting filesystem ,Permanent mounting files /etc/fstab, Journaling attributes, auto and manual mounting file system, file and disk management tools, the lost+found directory.

Linux User Essential, user management /etc/passwd, /etc/shadow, group management /etc/group, /etc/gshadow, Creating, Modifying, and Deleting Users, user roles default parameters, Ownership, working with groups, setting user environment, login configuration files, password essential, related security, /etc/skel, /etc/nologin, superuser equivalent.

Networking service overview, concept of IP,Subnet mask, Gateway and DNS , IP configuration, Multiple IP, range of IP, MAC address, network configuration file locations and format, routing table, Linux as a router, Network manager, Networking tools, Link status and other related commands.

Linux Permissions/ownership concept, traditional and octal method, Setting default permission ( UMASK), Special Permission ( SUID,SGID,Sticky bit), File and folder attributes, ACLs,Soft and Hard Links, Inode concepts.

One time automation (AT), Repetitive automation ( cron and anacron ), various examples, Maintenance scheduling, Backup and restore, Scheduling Security, scripting in cron at reboot, once in week/month.

Basic Commands, Advance commands, Linux Monitoring Commands, Linux Important Commands, rpm/Yum/dnf Server, Monitoring running Process(PID), Terminate running processes with kill, Systemd, Package Managers, Monitoring running system with top.

Shell Basics (Types of shells, Shell functionality Environment) Writing first script(Writing script & executing basic script, Debugging script, Making interactive scripts,Variables (default variables), Mathematical expressions) Conditional statements(If-else-elif, Test command,Logical operators-AND,OR,NOT, case –esac,Loops, While,For,Until, Break & continue) Command line arguments(Positional parameters, Set & shift, IFS, Break & continue) Functions & file manipulations (Processing file line by line,Functions) Regular Expression & Filters (What is regular expression, Grep,cut ,sort commands Grep patterns) SED & AWK Processes (Concept of process in Unix, Background processes, Scheduling processes -At, batch & Cron) Misc (rapping signals, String substitutions / manipulations)