System Principles

User's Guide

Version 9.3

- User's Guide
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### Chapters

- System Principles
  - Top of chapter
  - Starting the System
  - Restarting and Stopping the System
  - Boot Scripts
  - Code Loading Strategy
  - File Types
- Error Logging
  - Top of chapter
  - Error Information From the Runtime System
  - SASL Error Logging
- Creating and Upgrading a Target System
  - Top of chapter
  - Creating a Target System
  - Installing a Target System
  - Starting a Target System
  - System Configuration Parameters
  - Differences From the Install Script
  - Creating the Next Version
  - Upgrading the Target System
  - Listing of target_system.erl
- Upgrade when Erlang/OTP has Changed
  - Top of chapter
  - Introduction
  - Upgrade of Core Applications
  - Applications that Still do Not Allow Code Upgrade
- Versions
  - Top of chapter
  - OTP Version
  - Application Version
  - Version Scheme
  - OTP 17.0 Application Versions

# System Principles User's Guide

#### Version 9.3

#### March 13, 2018