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CentOS 7.0 - man page for shuf (centos section 1)

SHUF(1) 							   User Commands							   SHUF(1)

shuf - generate random permutations
shuf [OPTION]... [FILE] shuf -e [OPTION]... [ARG]... shuf -i LO-HI [OPTION]...
Write a random permutation of the input lines to standard output. Mandatory arguments to long options are mandatory for short options too. -e, --echo treat each ARG as an input line -i, --input-range=LO-HI treat each number LO through HI as an input line -n, --head-count=COUNT output at most COUNT lines -o, --output=FILE write result to FILE instead of standard output --random-source=FILE get random bytes from FILE -r, --repeat output lines can be repeated -z, --zero-terminated end lines with 0 byte, not newline --help display this help and exit --version output version information and exit With no FILE, or when FILE is -, read standard input. GNU coreutils online help: <> Report shuf translation bugs to <>
Written by Paul Eggert.
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
The full documentation for shuf is maintained as a Texinfo manual. If the info and shuf programs are properly installed at your site, the command info coreutils 'shuf invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 SHUF(1)