These scripts install or upgrade Node.js from the official binaries on Linux systems. They support installing specific versions or the latest in a major version series, automatically detect the system architecture, and handle version conflicts.

• Version Selection: Install a specific Node.js version (e.g., v18.17.0) or the latest in a major series (e.g., 20 for the newest 20.x version).
• Architecture Detection: Automatically detects x86_64, ARM64, ARMv7, etc., and downloads the appropriate binary.
• Conflict Resolution: Removes existing Node.js installations if they differ from the requested version.
• Symlinks: Creates symbolic links for node, npm, npx, and nodejs commands in /usr/local/bin.
• Verification: Tests all installed binaries after installation.
• Logging: Logs all operations to /var/log/node_install.log.

The upgrade script uses the same version selection rules as the installer, but it removes any existing node-* directories from /opt before installing the requested version.

sudo ./upgrade_nodeJs.sh [version]

The upgrade log is written to /var/log/node_upgrade.log.

sudo ./setup_nodeJs.sh [version]

• version: Optional. Can be:
  • A full version string (e.g., v18.17.0)
  • A major version number (e.g., 20) to install the latest in that series
  • If omitted, installs the latest LTS version

# Install the latest LTS version
sudo ./setup_nodeJs.sh

# Install the latest in Node.js 20.x series
sudo ./setup_nodeJs.sh 20

# Install a specific version
sudo ./setup_nodeJs.sh v18.17.0

1. Purge System Packages: Removes any system-installed nodejs and npm packages to avoid conflicts.
2. Version Resolution: Determines the exact version to install based on input.
3. Architecture Check: Detects the system architecture and selects the correct binary.
4. Download: Fetches the Node.js tarball from nodejs.org.
5. Extraction: Extracts to /opt/node-{version}-linux-{arch}/.
6. Cleanup: Removes the downloaded tarball.
7. Symlinks: Creates symlinks in /usr/local/bin for easy access.
8. Testing: Verifies all commands work and logs versions.

• Binaries: /opt/node-{version}-linux-{arch}/bin/
• Symlinks: /usr/local/bin/ (points to the above)
• Log File: /var/log/node_install.log

• Ensure you're running with sudo.
• Check that /var/log, /opt, and /usr/local/bin are writable by root.

• Verify internet connection.
• Check if the requested version exists on nodejs.org/dist/.
• For major versions, ensure there are releases in that series.

• The script supports x86_64, ARM64, and ARMv7.
• Unknown architectures fall back to x64 with a warning.

• Install jq: sudo apt install jq (on Debian/Ubuntu).

• The script only removes installations with different versions.
• If the same version is requested, it overwrites the existing install.

To remove Node.js installed by this script:

sudo rm -rf /opt/node-*
sudo rm /usr/local/bin/node /usr/local/bin/npm /usr/local/bin/npx /usr/local/bin/nodejs

This script is part of the Shell Script Utilities collection. See the main README for more information. /home/jonas/Git/Shell_Script_Utilities/Program_Setups/README.md