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Shuf

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Reference:man.archlinux.org

Usage

Generate random permutations.

With no FILE, stdin is used.

shell

shuf OPTIONS FILE

Option	Description
`-n` `--head-count`	Output at most COUNT lines.
`-z` `--zero-terminated`	Line delimiter is NUL, not newline.

Shuffle file names in current directory:

shell

printf '%s\n' * | shuf

Select random file from directory:

shell

printf '%s\0' * | shuf -zn 1