shuf man page

shuf — generate random permutations


shuf {{filename}}

shuf -n {{n}} {{filename}}

shuf -o {{another_filename}} {{filename}}

shuf -i {{low}}-{{high}}


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
get random bytes from FILE
-r, --repeat
output lines can be repeated
-z, --zero-terminated
line delimiter is NUL, not newline
display this help and exit
output version information and exit


Written by Paul Eggert.

Reporting Bugs

GNU coreutils online help: <>
Report shuf translation bugs to <>

See Also

Full documentation at: <…>
or available locally via: info '(coreutils) shuf invocation'

Referenced By


November 2016 GNU coreutils 8.26 User Commands