tput用法

1.  Clear all text on current line from a bash script

while :; do # an infinite loop just for demonstration
    echo "$RANDOM" # print your stuff here
    sleep 0.2
    tput cuu1 # move cursor up by one line
    tput el # clear the line
done

2. save and store cursor

echo "this is a tput test"
echo ""
tput sc
for((i=0,j=7; i<=7; i++,j--)); do
    ans=$((((((i % 2)) + 1))*2))
    echo $(tput cuu1; tput el; tput setaf $ans;)"show me the money $ans"$(tput sgr0)
    sleep 1
done
tput rc
echo "test done"

shell tput clear the current line

bash: clear string between two positions - Unix Stack Exchange

shell tput get current cursor position

How to get the cursor position in bash?

tput: Portable Terminal Control

linux tput move cursor to top

tput 介绍

tput 用法