Shell

The note is generated by “ChatGPT”.

🔹 source

• Executes a script in the current shell environment.
• Does not create a new shell process.
• All variable exports, alias definitions, and PATH modifications remain active after execution.
• Commonly used for reloading configuration files (e.g., source ~/.bashrc).
• Bash and Zsh built-in command.

Example:

1

source ~/.bashrc

→ Reloads your Bash configuration immediately in the current session.

🔹 bash

• Starts a new Bash subshell to run the script.
• The parent shell does not inherit any environment changes.
• Safer for running scripts that should not affect your current session.
• Suitable for installation, automation, or isolated execution.

Example: