script for converting uppercase to lower

script6.sh

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+#!/bin/bash
+
+##this script converts uppercase letters to lowercase
+
+echo "Enter the file name: "
+read fileName
+
+if [ ! -f $fileName ]; then
+	echo "FileName $fileName does not exist."
+	exit 1
+fi
+
+tr '[A-Z]' '[a-z]' < $fileName >> small.txt

small.txt

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+this is a script that works on mostly on ubuntu 
+systems as some packages to be installed are snaps.
+it contains only basic software installations.
+
+first change the script to executable:
+
+      chmod +x install.sh
+
+then run the script as root user for easier flow:
+
+      sudo ./install.sh
+
+the script then flows and install the listed packages.
+the examples of the packages are :
+      #vlc
+      #htop
+      #whatsapp-for-linux
+      #sl
+      #cowsay
+      #net-tools
+looking to create more scripts which will eventually be repetitive background processes 
+without much interaction from the user.
+
+
+note : the script is automatically deleted after finishing execution.
+here are screenshots of how it works!
+
+![screenshot from 2024-01-16 17-33-46](https://github.com/dee-mee/shell-script/assets/98864170/74601cd9-84db-4725-8c56-46222f12c7ed)
+
+
+![screenshot from 2024-01-16 17-34-56](https://github.com/dee-mee/shell-script/assets/98864170/342a39de-da4b-4499-8b3c-47f64099436c)
+
+
+![screenshot from 2024-01-16 17-36-43](https://github.com/dee-mee/shell-script/assets/98864170/157d28af-c5a1-4e57-b553-daba8e3a2451)
+
+
+
+![screenshot from 2024-01-16 17-36-54](https://github.com/dee-mee/shell-script/assets/98864170/a9d75789-4977-4e49-acdf-da3b0af845f8)