Sometimes I get bored at 4am…

snail

#!/usr/bin/env sh

anim=('_@"' '_@-"')
trail='.'

COLUMNS=$(tput cols)
for i in $(seq 1 $COLUMNS)
do
  line=""
  for j in $(seq 1 $i)
  do
    line="$trail$line"
  done

  line="$line${anim[$((i%${#anim[@]}))]}"
  for j in $(seq 1 $COLUMNS)
  do
    line="$line "
  done

  line=${line:0:$COLUMNS}
  printf "\r%s" "$line"
  sleep .25
done
echo