Shell Programming and Scripting

Example:

echo "A 1"
echo "A 2"
echo "A 3"
echo "A 4"
echo "A 5"

The above should be printed in one second only. Next will be:

echo "B 1"
echo "B 2"
echo "B 3"
echo "B 4"
echo "B 5"

Output in two seconds:

A 1
A 2
A 3
A 4
A 5
B 1
B 2
B 3
B 4
B 5

date +%s
echo "A 1"; sleep 0.2
echo "A 2"; sleep 0.2
echo "A 3"; sleep 0.2
echo "A 4"; sleep 0.2
echo "A 5"; sleep 0.2
date +%s

date +%s
sleep 1 &
echo "A 1"
echo "A 2"
echo "A 3"
echo "A 4"
echo "A 5"
wait
date +%s