Random
has two distinct modes of operations.
The default is to read in lines
from the standard input and randomly write them out
to the standard output with a probability of
1 /
denominator.
The default
denominator
for this mode of operation is 2, giving each line a 50/50 chance of
being displayed.
The second mode of operation is to read in a file from
filename
and randomize the contents of the file and send it back out to
standard output.
The contents can be randomized based off of newlines or based off of
space characters as determined by
isspace(3).
The default
denominator
for this mode of operation is 1, which gives each line a chance to be
displayed, but in a
random(3)
order.
The options are as follows:
|
| -e
|
| |
If the
-e
option is specified,
random
does not read or write anything, and simply exits with a random
exit value of 0 to
denominator
amp;- 1, inclusive.
|
| -f filename
|
| |
The
-f
option is used to specify the
filename
to read from.
Standard input is used if
filename
is set to
'-'.
|
| -l
|
| |
Randomize the input via newlines (the default).
|
| -r
|
| |
The
-r
option guarantees that the output is unbuffered.
|
| -U
|
| |
Tells
random(6)
that it is okay for it to reuse any given line or word when creating a
randomized output.
|
| -u
|
| |
Tells
random(6)
not to select the same line or word from a file more than once (the
default).
This does not guarantee uniqueness if there are two of the
same tokens from the input, but it does prevent selecting the same
token more than once.
|
| -w
|
| |
Randomize words separated by
isspace(3)
instead of newlines.
|
|
