How to delete and replace last line in the terminal using bash?

bash, line, replace, terminal

Solution

echo a carriage return with \r

seq 1 1000000 | while read i; do echo -en "\r$i"; done

from man echo:

-n     do not output the trailing newline
-e     enable interpretation of backslash escapes

\r     carriage return

Problem

I want to implement a progress bar showing elapsed seconds in bash. For this, I need to erase the last line shown on the screen (command "clear" erases all the screen, but I need to erase only the line of the progress bar and replace it with the new information). Final result should look like: ``` $ Elapsed time 5 seconds ``` Then after 10 seconds i want to replace this sentence (in the same position in the screen) by: ``` $ Elapsed time 15 seconds ```

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