IFS : How do I split a string on a delimiter in Bash?

[tamalsaha]

• https://bash.cyberciti.biz/guide/$IFS
• https://stackoverflow.com/a/918931/244009
• https://stackoverflow.com/questions/16831429/when-setting-ifs-to-split-on-newlines-why-is-it-necessary-to-include-a-backspac

[tamalsaha]

while IFS= read -r line
do
  echo "$line"
done < input_file

The internal field separator (IFS) is set to the null string to preserve leading and trailing whitespace which is the default behavior of the read command.

[tamalsaha]

str="Learn to Split a String in Bash Scripting"

IFS=' ' # space is set as delimiter
read -ra ADDR <<< "$str" # str is read into an array as tokens separated by IFS
for i in "${ADDR[@]}"; do # access each element of array
    echo "$i"
done

https://www.tutorialkart.com/bash-shell-scripting/bash-split-string/