Operating System - Linux

1. Introduction to Linux​

2. Linux Booting Process

• Download and install Oracle Virtual Box

• Download and install Cent OS in Virtual Box

• Stages of Booting Process

  • BIOS, MBR, GRUB, Kernel, Init, Run levels​

• Troubleshooting Linux OS in case of issues

3. Shell Scripting

• Introduction, Using Variables & Arrays

• Basic Operators - Arithmetic, Relational, Boolean

• Decision Making - if-else

• Loops- while, for, until, break, continue.

4. Linux Basic Commands

• Working Directories, Changing Directories 

• Navigating to home directory, 

• Navigating to Multiple directories 

• Commands – pwd, cd, cd/, cd..

• Relative & Absolute Paths 

• Pipe, grep, sort 

• Find & Search – Find files by Name, By Content 

• tail command – to see live logs 

• Linux Input Output Redirection using ‘>’, ‘<’, ‘2>’,’2>&1’ 

• Linux Regular expressions to analyze text 

• Archive, compress, and un-compress files using tar, star,gzip,bzip2 

• Locate, read, and use system documentation including man, info, and files in /usr/share/doc

• Create hard and soft links

5. Files, Directories, Users & Groups 

• Create & Read a File

• Edit or Append Content to a File using vi, cat

• Search a File – Commands: find, diff,file

• Search a word in file- Command: grep

• Replace a word in File – Command: sed

• Create and manage new Users, Groups accounts

• Changing File Permissions - command: chmod

6. System Management

• System Information – Commands: free, cpuinfo, uname

7. Software Management 

• Installing Packages – Commands: yum [install,remove]

8. Services 

• ​Commands: service [status, start,stop], chkconfig, systemctl

• Systemd 

• Create Services, Timer (an alternative of cron job)

• Process

  • What is Process

  • Commands: Fg, Top, PS, kill, NICE, DF

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(The course is adjusted as per the requirements of the training.)