Automate with Shell Scripts: A Comprehensive Linux Admin Course

Automate with Shell Scripts: A Comprehensive Linux Admin Course

This repository contains few basic shell scripts

Content Details

• Connect to a Virtual Machine using Vagrant and VirtualBox
  • Add an operating system image in Vagrant
  • Create a Vagrant project folder
  • Launch Virtual Machine
  • Connect to the VM using secure shell
  • Stop the VM
  • Additional Info
• How to create multiple VMs
• Hello world shell script
  • Initial configuration steps (same for executing any shell scripts using Vagrant)
  • Understanding the folder structure in VM and local PC
  • Creating a shell file in Linux
  • Hello world shell script
  • Understanding the file permissions
  • Understanding builtin commands
• Variables
  • Create a variable and display the value
  • Using variables inside a hard-coded text
  • Appending text to a variable
  • Combining two variables
• Arithmetic expansion and valuation
  • Arithmetic expansion
  • Arithmetic operations using awk command
  • Arithemtic operations using ‘let’ command
  • Arithmetic operations using ‘expr’ command
• Conditional statements
• Exit status, Return codes, String test conditional
• Reading Standard inputs, creating accounts, username conventions
  • Reading Standard inputs
  • Create an user account
• Shell script to add users to Linux
• Random Data, Cryptographic hash functions and string manipulation
  • Generate Random numbers – using builtin variables
  • Generate Random numbers – using date and time builtin variables
  • Generate Random numbers – using cryptographic hash functions (checksum)
  • Add special characters to the password
• Positional Parameters, Arguments, for Loops and Special Parameters
  • Understanding the command serarch path or PATH env variable
  • Positional Parameter
  • Parameters
  • For loops and Special Parameter
• While loops, infinite loops, Shifting and Sleeping
  • Loops, Sleep and Shift
• Creating Local Users - Script 2
• Standard Input, Standard Output and Standard error
  • STDIN and STDOUT
  • STDERR
• Creating Local Users - Script 2
• Case statements
• Functions
  • Functions with no input arguments
  • Functions with input arguments
  • Functions with input arguments and global variables
  • Logger command
  • Another function to back up files
• Parsing command line options with getopts
• Deleting and Disabling Linux accounts
  • Finding files
  • Userdel command
  • Archiving files
  • Disabling account
• Deleting local user
• Cut and Awk commands
• Sort and uniq commands
• Parsing log files
• Scripting remote commands