How to convert a string to lower case in Bash?

Question

Is there a way in bash to convert a string into a lower case string?

For example, if I have:

a=\"Hi all\"

I want to convert it to:<

Answer 1

To store the transformed string into a variable. Following worked for me - $SOURCE_NAME to $TARGET_NAME

TARGET_NAME="`echo $SOURCE_NAME | tr '[:upper:]' '[:lower:]'`"