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32 .\" @(#)random.6 8.2 (Berkeley) 3/31/94
40 .Nd random lines from a file or random numbers
48 has two distinct modes of operations.
49 The default is to read in lines
50 from the standard input and randomly write them out
51 to the standard output with a probability of
56 for this mode of operation is 2, giving each line a 50/50 chance of
59 The second mode of operation is to read in a file from
61 and randomize the contents of the file and send it back out to
63 The contents can be randomized based off of newlines or based off of
64 space characters as determined by
68 for this mode of operation is 1, which gives each line a chance to be
73 The options are as follows:
80 does not read or write anything, and simply exits with a random
87 option is used to specify the
90 Standard input is used if
95 Randomize the input via newlines (the default).
99 option guarantees that the output is unbuffered.
103 that it is okay for it to reuse any given line or word when creating a
108 not to select the same line or word from a file more than once (the
110 This does not guarantee uniqueness if there are two of the
111 same tokens from the input, but it does prevent selecting the same
112 token more than once.
114 Randomize words separated by
123 functionality to randomizing lines and words was added in 2003 by
124 .An "Sean Chittenden" Aq seanc@FreeBSD.org .
126 No index is used when printing out tokens from the list which
127 makes it rather slow for large files (10MB+).
129 files, however, it should still be quite fast and efficient.