---
name: "shuffle"
section: "1"
platform: "linux"
package: "shuffle"
version: "1.6-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/shuffle"
---

# shuffle(1)

randomly reorder lines in a file

## NAME

shuffle - randomly reorder lines in a file

## SYNOPSIS

**shuffle** \[ infile \[ outfile \] \]

## DESCRIPTION

**shuffle** reads  *infile* into memory, shuffles the lines, and writes the result to *outfile*.

## OPTIONS

None.

## OPERANDS

The following operands are supported:

- *infile*

  A path name of an input file. If no *infile* is specified, or if *infile* is equal to "-", the standard input is used.

- *outfile*

  A path name of an output file. If no *outfile* is specified, or if *outfile* is equal to "-", the standard output is used.

## NOTES

Since **shuffle** reads the input into memory, it may fail on very large files.