History
The du utility first appeared in version 1 of AT&T UNIX.
Read more about this topic: Du (Unix)
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“It takes a great deal of history to produce a little literature.”
—Henry James (1843–1916)
“The disadvantage of men not knowing the past is that they do not know the present. History is a hill or high point of vantage, from which alone men see the town in which they live or the age in which they are living.”
—Gilbert Keith Chesterton (1874–1936)