Man1 - 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.

With no FILE, or when FILE is -, read standard input.

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

line delimiter is NUL, not newline

–help

display this help and exit

–version

output version information and exit

Written by Paul Eggert.

GNU coreutils online help: https://www.gnu.org/software/coreutils/
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Copyright © 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Full documentation https://www.gnu.org/software/coreutils/shuf
or available locally via: info ’(coreutils) shuf invocation’