What is raspi-config, and how is it used?

 raspi-config is a configuration tool for Raspberry Pi systems, designed to help users easily set up and manage various system settings through a simple text-based menu interface. It’s especially useful for users who are new to Linux or those who want a convenient way to adjust system settings without manually editing configuration files.



How to Access raspi-config:

  1. Open Terminal on your Raspberry Pi.
  2. Type the following command and press Enter:
    bash

    sudo raspi-config

Key Features of raspi-config:

Here are some common settings you can configure:

  1. System Options:

    • Change the hostname.
    • Enable/disable password login or auto-login.
    • Configure wireless LAN settings.

  2. Display Options:

    • Set resolution.
    • Enable/disable overscan (to fix display borders).

  3. Interface Options:

    • Enable/disable interfaces like SSH, VNC, SPI, I2C, Serial, 1-Wire, and Remote GPIO.

  4. Performance Options:

    • Overclock the Raspberry Pi (if supported).
    • Adjust GPU memory allocation.

  5. Localization Options:

    • Set the locale, time zone, keyboard layout, and Wi-Fi country.

  6. Advanced Options:

    • Expand the filesystem to use the entire SD card.
    • Configure boot options (e.g., boot to desktop or CLI).
    • Set up audio output preferences.

  7. Update:

    • Update raspi-config to the latest version.

Navigating raspi-config:

  • Use the arrow keys to move through the menu.
  • Press Enter to select an option.
  • Use Tab to switch between buttons (like <Ok> and <Cancel>).
  • After making changes, you may need to reboot the Raspberry Pi for them to take effect.

Example Use Case:

  1. Enable SSH:

    • Open raspi-config.
    • Navigate to Interface Options > SSH.
    • Select Enable and exit.
    • Now, you can remotely access your Raspberry Pi via SSH.

  2. Expand Filesystem:

    • Go to Advanced Options > Expand Filesystem.
    • This ensures your Raspberry Pi uses the full capacity of your SD card.

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