clorjzre5000008l6bx354svp.md

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---
title: "DevOps 6.0: Bash Scripting 🚀✨"
seoTitle: "DevOps 6.0: Bash Scripting 🚀✨"
seoDescription: ""DevOps 6.0: Bash Scripting - Unleashing the Power of Automation 🚀💻""
datePublished: Thu Nov 09 2023 18:59:49 GMT+0000 (Coordinated Universal Time)
cuid: clorjzre5000008l6bx354svp
slug: devops-60-bash-scripting
cover: https://cdn.hashnode.com/res/hashnode/image/upload/v1699552754344/74d23407-425a-402e-a288-97082582392c.png
ogImage: https://cdn.hashnode.com/res/hashnode/image/upload/v1699556361652/bc835351-7722-47ad-b901-39c21c2a3123.png
tags: linux, bash, devops, bash-script, wemakedevs

---

What is bash scripting?

Bash scripting is a method of automating tasks on Unix-like operating systems using the Bash shell. It involves writing sequences of commands in a script to streamline and automate repetitive tasks, making system administration and other routine processes more efficient.

Let's create a Script:

Steps:

1. Create directory bashscripts.

2. Copy the below Vagrantfile to it

   Vagrant.configure("2") do |config|
       config.vm.define "scriptbox" do |scriptbox|    
       scriptbox.vm.box = "jacobw/fedora35-arm64"
       scriptbox.vm.network "private_network", ip: "192.168.56.26"
       scriptbox.vm.hostname = "scriptbox"
       scriptbox.vm.provider "vmware_desktop" do |v|
         v.allowlist_verified = true
         v.ssh_info_public = true
           v.gui = true
       end
       scriptbox.vm.provision "shell", inline: <<-SHELL
        mv /etc/yum.repos.d/fedora-updates.repo /tmp/
        mv /etc/yum.repos.d/fedora-updates-modular.repo /tmp/
        yum clean all
        yum update
        systemctl stop firewalld
       SHELL
     end
       config.vm.define "web01" do |web01|    
       web01.vm.box = "jacobw/fedora35-arm64"
       web01.vm.network "private_network", ip: "192.168.56.27"
       web01.vm.hostname = "web01"
       web01.vm.provider "vmware_desktop" do |v|
         v.allowlist_verified = true
         v.ssh_info_public = true
           v.gui = true
       end
       web01.vm.provision "shell", inline: <<-SHELL
        mv /etc/yum.repos.d/fedora-updates.repo /tmp/
        mv /etc/yum.repos.d/fedora-updates-modular.repo /tmp/
        yum clean all
        yum update
        systemctl stop firewalld
       SHELL
     end
       config.vm.define "web02" do |web02|    
       web02.vm.box = "jacobw/fedora35-arm64"
       web02.vm.network "private_network", ip: "192.168.56.28"
       web02.vm.hostname = "web02"
       web02.vm.provider "vmware_desktop" do |v|
         v.allowlist_verified = true
         v.ssh_info_public = true
           v.gui = true
       end
       web02.vm.provision "shell", inline: <<-SHELL
        mv /etc/yum.repos.d/fedora-updates.repo /tmp/
        mv /etc/yum.repos.d/fedora-updates-modular.repo /tmp/
        yum clean all
        yum update
        systemctl stop firewalld
       SHELL
     end
       config.vm.define "web03" do |web03|    
       web03.vm.box = "spox/ubuntu-arm" 
       web03.vm.box_version = "1.0.0"
       web03.vm.network "private_network", ip: "192.168.56.29"
       web03.vm.hostname = "web03"
       web03.vm.provider "vmware_desktop" do |v|
         v.allowlist_verified = true
         v.ssh_info_public = true
           v.gui = true
       end
     end
   end

3. Do vagrant up scriptbox and vagrant ssh to login.

4. Do sudo -i to go to root user.

5. Create a directory using mkdir /opt/scripts .

6. cd into it using cd /opt/scripts .

7. Do vim firstscript.sh . sh is the extension for shell script but it is not necessary.

8. Enter the below script into it -

   #! /bin/bash
   # The above line is called a shebang, indicating that the script should be interpreted using the Bash shell.
   
   echo "Welcome to bash script"
   # Print a welcome message to the console.
   
   echo
   # Print an empty line for better readability in the console.
   
   echo "The uptime of the system is: "
   uptime
   # Display the system uptime using the 'uptime' command.
   
   echo "Memory Utilization"
   free -m
   # Display memory utilization using the 'free' command with the '-m' option to show results in megabytes.
   
   echo "Disk Utilization"
   df -h
   # Display disk utilization using the 'df' command with the '-h' option to show results in a human-readable format.

9. Do ./firstscript.sh you will get permission denied because it does not have execute permission

   ![](https://cdn.hashnode.com/res/hashnode/image/upload/v1699554566993/4b46ecf5-5d72-4c6c-ba0b-fd9aba7bfd9f.png align="center")

10. So give permission using chmod +x firstscript.sh .

11. Run ./firstscript.sh to see the output.

Setup a website using script:

Steps:

1. Create the script using vim /opt/scripts/websetup.sh .

2. Copy the below contents in the script -

   #! /bin/bash
   
   ######## Install required packages ########
   sudo yum install wget unzip httpd -y
   
   ######## Start and enable Apache HTTP server ########
   sudo systemctl start httpd
   sudo systemctl enable httpd
   
   ######## Create a temporary directory for web files ########
   mkdir -p /tmp/webfiles
   cd /tmp/webfiles
   
   ######## Download and extract a web template ########
   wget https://www.tooplate.com/zip-templates/2136_kool_form_pack.zip
   unzip 2136_kool_form_pack
   
   ######## Copy the extracted files to the web server's directory ########
   sudo cp -r 2136_kool_form_pack/* /var/www/html/
   
   ######## Restart the Apache HTTP server to apply changes ########
   sudo systemctl restart httpd
   
   ######## Clean up: Remove the temporary directory ########
   rm -rf /tmp/webfiles

3. Execute using /opt/scripts/websetup.sh .

4. Get the IP address of the VM and paste it on the browser to see the website live.

This is how script makes the process is !!!