SHUF(1) General Commands Manual SHUF(1) NAME shuf - Shuffle the input by outputting a random permutation of input lines. Each output permutation is equally likely. With no FILE, or when FILE is -, read standard input. SYNOPSIS shuf [OPTION]... [FILE] shuf -e [OPTION]... [ARG]... shuf -i LO-HI [OPTION]... DESCRIPTION Shuffle the input by outputting a random permutation of input lines. Each output permutation is equally likely. With no FILE, or when FILE is -, read standard input. OPTIONS -e, --echo treat each ARG as an input line -i, --input-range treat each number LO through HI as an input line -n, --head-count output at most COUNT lines -o, --output write result to FILE instead of standard output --random-seed seed with STRING for reproducible output --random-source get random bytes from FILE -r, --repeat output lines can be repeated -z, --zero-terminated line delimiter is NUL, not newline -h, --help Print help -V, --version Print version [file-or-args] VERSION v(uutils coreutils) 0.11.0 2026-09-01 SHUF(1)