This gist contains the collection of shell scripts for reference

ShellScriptPlayground.sh

#!/bin/sh

#*****Reading ******#
#From user
read -p "Enter Name: " userName
echo $userName

#From text file - line by line
while read line; do
echo $line
done < en.txt

#Convert string (by split with ;) to array
csvStr="a,b,c"
IFS=',' read -ra itemArray <<< "$csvStr"

#***** PRINTING ****#
#Print first item in the array
echo "FIRST ITEM -- > ${itemArray[0]}"

#Print all items from array
for i in "${itemArray[@]}"; do
    echo $i
done

#

echo "Completed !!"