I was practicing echo command with option \r (carriage return) as below.

echo -e "This is \r my college"

output : my college

but when i add one more word before \r as below

echo -e "This is the \r my college"

Then it gives me output like : my college the Another example

echo -e "This is \r valid data" output: valid data

echo -e "This is not a \r valid data" output: valid data a

so i wanted to know that what is the actual purpose of carriage return here?