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Next Previous Contents Bash Prompt HOWTO Giles Orr, giles@interlog.com v0.76 31 December 2024 Creating and controlling terminal and xterm prompts is discussed, including incorporating standard escape sequences to give username, current working directory, time, etc. Further suggestions are made on how to modify xterm title bars, use external functions to provide prompt information, and how to use ANSI colours. 1. Introduction and Administrivia 1.1 Requirements 1.2 How To Use This Document 1.3 Translations 1.4 Problems 1.5 Send Me Comments and Suggestions 1.6 Credits 1.7 Copyright and Disclaimer 2. Bash and Bash Prompts 2.1 What is Bash? 2.2 What Can Tweaking Your Bash Prompt Do For You? 2.3 Why Bother? 2.4 The First Step 2.5 Bash Prompt Escape Sequences 2.6 Setting the PS? Strings Permanently 3. Bash Programming and Shell Scripts 3.1 Variables 3.2 Quotes and Special Characters 3.3 Command Substitution 3.4 Non-Printing Characters in Prompts 3.5 Sourcing a File 3.6 Functions, Aliases, and the Environment 4. External Commands 4.1 PROMPT_COMMAND 4.2 External Commands in the Prompt 4.3 What to Put in Your Prompt 5. Xterm Title Bar Manipulations 6. ANSI Escape Sequences: Colours and Cursor Movement 6.1 Colours 6.2 Cursor Movement 6.3 Moving the Cursor With tput 7. Special Characters: Octal Escape Sequences 8. The Bash Prompt Package 8.1 Availability 8.2 Xterm Fonts 8.3 Changing the Xterm Font 9. Loading a Different Prompt 9.1 Loading a Different Prompt, Later 9.2 Loading a Different Prompt, Immediately 10. Loading Prompt Colours Dynamically 10.1 A "Proof of Concept" Example 11. Prompt Code Snippets 11.1 Built-in Escape Sequences 11.2 Date and Time 11.3 Counting Files in the Current Directory 11.4 Total Bytes in the Current Directory 11.5 Checking the Current TTY 11.6 Suspended Job Count 11.7 Uptime and Load 11.8 Number of Processes 11.9 Controlling the Width of $PWD 11.10 Laptop Power 11.11 Having the Prompt Ignored on Cut and Paste 11.12 Setting the Window Title and Icon Title Separately 12. Example Prompts 12.1 Examples on the Web 12.2 A "Lightweight" Prompt 12.3 Elite from Bashprompt Themes 12.4 A "Power User" Prompt 12.5 Prompt Depending on Connection Type 12.6 A Prompt the Width of Your Term 12.7 The Elegant Useless Clock Prompt Next Previous Contents

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