Linux mkfifo Guide

Complete beginner-friendly guide to mkfifo on Linux, covering Arch Linux, CachyOS, and other distributions including named pipe creation, FIFO creation, and inter-process communication.

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Table of Contents

1. Understanding mkfifo
2. mkfifo Basics
3. Creating FIFOs
4. Using FIFOs
5. Troubleshooting

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Understanding mkfifo

What is mkfifo?

mkfifo creates named pipes (FIFOs).

Uses:

• Named pipes: Create FIFO special files
• IPC: Inter-process communication
• Process communication: Communication between processes
• Data streaming: Stream data between processes

Why it matters:

• IPC: Enable process communication
• Data flow: Stream data between processes
• Synchronization: Synchronize processes

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mkfifo Basics

Create FIFO

Basic usage:

# Create named pipe
mkfifo mypipe

# Creates FIFO named "mypipe"

With Permissions

Set permissions:

# With permissions
mkfifo -m 666 mypipe

# -m = mode (666 permissions)

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Creating FIFOs

Simple FIFO

Basic FIFO:

# Create FIFO
mkfifo mypipe

# Creates named pipe

Multiple FIFOs

Multiple pipes:

# Multiple FIFOs
mkfifo pipe1 pipe2 pipe3

# Creates multiple named pipes

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Using FIFOs

Write to FIFO

Send data:

# Write to FIFO
echo "Hello" > mypipe

# Sends data to pipe

Read from FIFO

Receive data:

# Read from FIFO
cat < mypipe

# Receives data from pipe

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Troubleshooting

mkfifo Not Found

Check installation:

# mkfifo is part of coreutils
# Usually pre-installed

# Check mkfifo
which mkfifo

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Summary

This guide covered mkfifo usage, named pipe creation, and inter-process communication for Arch Linux, CachyOS, and other distributions.

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Next Steps

• mknod Guide - Device node creation
• Process Management - Process management
• Bash Scripting Guide - Scripting basics
• mkfifo Documentation: man mkfifo

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This guide covers Arch Linux, CachyOS, and other Linux distributions. For distribution-specific details, refer to your distribution's documentation.