10-12-2011
sleep and echo have nothing to do with it. It's just an example.
Did you try my example, and see what it did?
The shell runs lines in order. That's why it waits a second between printing A, B, and C -- sleep pauses a second, and the shell waits for it to end before running the next line.
If you left out all the sleeps it'd still run all three commands in order and wait for each to finish. But it'd happen so quickly you wouldn't see what it was doing.
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