USAGE
: av_uniq [-v] [-w windowSize] [-l lineSize]
Write only lines that are unique withinan N-line window
windowSize
is the number of lines of text in the window. Default 100
lineSize
is size of the longest line that will be correctly handled.
Default 4096.
Note that
the lines written might not be in exactly the same order as
they were read.
-v writes
some verbose information to stderr
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