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From bash's manual page on redirecting with '>'
Redirection of output causes the file whose name results from the
expansion of word to be opened for writing on file descriptor n,
or the standard output (file descriptor 1) if n is not specified.
If the file does not exist it is created; if it does exist it is
truncated to zero size.
Change-Id: I0d1a56441fcb5a2a2aed043fc1ece866c5d8287a
Reviewed-on: http://gerrit.cloudera.org:8080/4967
Reviewed-by: Jim Apple <jbapple@cloudera.com>
Tested-by: Impala Public Jenkins