man sleep

echo Wake up, Alexeyy95...

sleep 3

clear

echo The LOR has you...

sleep 5

clear

echo Knock knock.

echo "hello world!" | (while read -n 1 letter; do if [ "x$letter" = "x" ]; then letter=" "; fi; echo -n "$letter"; sleep 0.2; done; echo)

stty ospeed 1

echo 'Hello, LOR!' | grep -o . | while read -r c; do echo -n $c; sleep 0.1; done; echo