bash script, erase previous line?

Question

In lots of Linux programs, like curl, wget, and anything with a progress meter, they have the bottom line constantly update, every certain amount of time. How do I do that in a

Answer 1

Small variation on linuts' code sample to move the cursor not to the beginning, but the end of the current line.

{
  for pc in {1..100}; do
    #echo -ne "$pc%\033[0K\r"
    echo -ne "\r\033[0K${pc}%"
    sleep 1
  done
  echo
}