Linux wait Guide

⏳ Linux wait Guide

Complete beginner-friendly guide to wait on Linux, covering Arch Linux, CachyOS, and other distributions including waiting for processes, job synchronization, and process coordination.

---

Table of Contents

1. Understanding wait
2. wait Basics
3. Waiting for Jobs
4. Process Synchronization
5. Troubleshooting

---

Understanding wait

What is wait?

wait waits for background jobs to complete.

Uses:

• Wait for jobs: Wait for job completion
• Synchronization: Synchronize processes
• Script coordination: Coordinate in scripts
• Process management: Manage process completion

Why it matters:

• Synchronization: Wait for processes
• Scripts: Coordinate script execution
• Job control: Manage job completion

---

⏳ wait Basics

Wait for Jobs

Basic usage:

# Wait for all jobs
wait

# Waits for all background jobs

Specific Job

Job number:

# Wait for specific job
wait %1

# Or
wait 1

# %1 = job number 1

---

Waiting for Jobs

Multiple Jobs

Wait for several:

# Wait for multiple jobs
wait %1 %2 %3

# Waits for all specified jobs

Exit Status

Get exit code:

# Wait and get exit status
wait %1
echo "Exit code: $?"

---

Process Synchronization

In Scripts

Use in scripts:

#!/bin/bash
command1 &
PID1=$!
command2 &
PID2=$!

# Wait for both
wait $PID1 $PID2
echo "Both commands completed"

---

Troubleshooting

Job Not Found

Check jobs:

# List jobs first
jobs

# Verify job number exists

---

Summary

This guide covered wait usage, job synchronization, and process coordination for Arch Linux, CachyOS, and other distributions.

---

Next Steps

• jobs Guide - List jobs
• Bash Scripting Guide - Scripting
• Process Management - Process management
• wait Documentation: man wait

---

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