Bashrc Environment Updater

This is a simple Bash project that lets you update your environment by commenting and uncommenting environment variable definitions (e.g., export JAVA_HOME).

Project Components

• bashrc

  • A custom bashrc file that includes environment variable definitions and useful functions.
  • Can be used for testing environment variable switching.

• switch_variables.sh

  • Uncomments a line if exactly one match is found and comments out all other lines.
  • Displays matching lines and prompts you to refine your search if multiple matches are found.
  • Automatically updates your current shell environment by sourcing the modified bashrc.

Requirements

• Bash shell (version 4 or above is recommended)
• Standard Unix utilities: grep and sed

Usage

To uncomment the line in bashrc containing export JAVA_HOME that matches 11 and comment out every other line with export JAVA_HOME, you can use:

Sourcing the Script Directly

source ./switch_variables.sh ./bashrc JAVA_HOME 11

Using the Functions

source switch-variables/bashrc

After sourcing the provided bashrc, you will have access to two functions that serve as shortcuts for the current shell:

switch_variable JAVA_HOME 11

Or the shortcut:

switch_java 11

Installation

You can install this script by sourcing the custom bashrc in your actual ~/.bashrc:

source <your_path>/switch-variables/bashrc

If you want to use a different file to manage your environment variables (e.g., your actual ~/.bashrc), edit the BASHRC_FILE accordingly.

Contributing

Contributions are welcome! If you find any errors in the scripts or documentation, please open an issue or submit a pull request.

License

This project is licensed under the MIT License. See the LICENSE file for details.