reboot

Overview

The reboot command restarts the system. It’s a simplified interface for the shutdown command that performs a system reboot.

Syntax

reboot [options]

Common Options

Option Description
-f, --force Force reboot
-w, --wtmp-only Just write wtmp record
-d, --no-wtmp Don’t write wtmp record
-n, --no-sync Don’t sync before reboot
-p, --poweroff Power off instead
--halt Halt the system
-h, --help Show help
-v, --version Show version

Key Use Cases

  1. System restart
  2. Maintenance reboot
  3. Emergency restart
  4. Kernel updates
  5. Hardware changes

Examples with Explanations

Example 1: Basic Usage

reboot

Normal system reboot

Example 2: Force Reboot

reboot -f

Force immediate reboot

Example 3: Write Log Only

reboot -w

Only write wtmp record

Understanding Output

System messages: - Broadcast notification - Service shutdown - Process termination - System restart

Common Usage Patterns

  1. Safe reboot:

    reboot

  2. Emergency reboot:

    reboot -f

  3. Simulate reboot:

    reboot -w

Security Considerations

  1. User permissions
  2. Process handling
  3. Data integrity
  4. Service shutdown
  5. Hardware safety

Additional Resources

Best Practices

  1. Schedule reboots
  2. Notify users
  3. Check processes
  4. Save data
  5. Document actions

Process Handling

  1. Service shutdown
  2. Process termination
  3. File system sync
  4. Memory cleanup
  5. Hardware reset

Safety Checks

  1. Active users
  2. Running processes
  3. Open files
  4. System services
  5. Hardware status