init

README.md

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+# Offline Node.js 22 setup for Ubuntu 20.04
+
+This folder contains scripts to prepare and install fresh Node.js 22 without internet on target host.
+
+## Files
+
+- `prepare-online.sh` - run on internet-connected Linux machine
+- `install-offline.sh` - run on offline Ubuntu 20.04 machine
+
+## 1) On online machine
+
+```bash
+cd nodejs-offline-ubuntu2004
+chmod +x prepare-online.sh install-offline.sh
+
+# x64, latest v22
+./prepare-online.sh x64
+
+# OR arm64, latest v22
+./prepare-online.sh arm64
+
+# Optional: pin exact version
+./prepare-online.sh x64 22.15.0
+```
+
+You will get directory like:
+- `bundle-node-v22.15.0-linux-x64`
+
+Copy this directory **and** `install-offline.sh` to offline machine.
+
+## 2) On offline Ubuntu 20.04
+
+```bash
+chmod +x install-offline.sh
+sudo ./install-offline.sh ./bundle-node-v22.15.0-linux-x64
+source /etc/profile.d/nodejs.sh
+node -v
+npm -v
+```
+
+## Notes
+
+- Default install path: `/opt/nodejs`
+- Active symlink: `/opt/nodejs/current`
+- To install into custom path:
+
+```bash
+sudo INSTALL_PREFIX=/srv/nodejs ./install-offline.sh ./bundle-node-v22.15.0-linux-x64
+```

install-offline.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage on offline machine:
+#   sudo ./install-offline.sh /path/to/bundle-node-v22.x.y-linux-x64
+#
+# Optional:
+#   INSTALL_PREFIX=/opt/nodejs sudo ./install-offline.sh /path/to/bundle
+
+BUNDLE_DIR="${1:-}"
+INSTALL_PREFIX="${INSTALL_PREFIX:-/opt/nodejs}"
+
+if [[ -z "${BUNDLE_DIR}" ]]; then
+  echo "Usage: sudo ./install-offline.sh /path/to/bundle-node-v22.x.y-linux-{x64|arm64}"
+  exit 1
+fi
+
+if [[ ! -d "${BUNDLE_DIR}" ]]; then
+  echo "Bundle directory not found: ${BUNDLE_DIR}"
+  exit 1
+fi
+
+if [[ ! -f "${BUNDLE_DIR}/INSTALL_ARGS.txt" ]]; then
+  echo "Missing INSTALL_ARGS.txt in bundle."
+  exit 1
+fi
+
+# shellcheck disable=SC1091
+source "${BUNDLE_DIR}/INSTALL_ARGS.txt"
+
+if [[ -z "${ARCHIVE:-}" || -z "${VERSION:-}" ]]; then
+  echo "INSTALL_ARGS.txt is invalid."
+  exit 1
+fi
+
+if [[ ! -f "${BUNDLE_DIR}/${ARCHIVE}" ]]; then
+  echo "Archive not found: ${BUNDLE_DIR}/${ARCHIVE}"
+  exit 1
+fi
+
+if [[ ! -f "${BUNDLE_DIR}/SHASUMS256.txt" ]]; then
+  echo "SHASUMS256.txt not found in bundle."
+  exit 1
+fi
+
+echo "Verifying checksum..."
+(
+  cd "${BUNDLE_DIR}"
+  sha256sum -c SHASUMS256.txt --ignore-missing | awk "/${ARCHIVE}: OK/"
+)
+
+echo "Installing to ${INSTALL_PREFIX}..."
+sudo mkdir -p "${INSTALL_PREFIX}"
+sudo tar -xJf "${BUNDLE_DIR}/${ARCHIVE}" -C "${INSTALL_PREFIX}"
+sudo ln -sfn "${INSTALL_PREFIX}/node-v${VERSION}-linux-${ARCH}" "${INSTALL_PREFIX}/current"
+
+PROFILE_FILE="/etc/profile.d/nodejs.sh"
+LINE='export PATH=/opt/nodejs/current/bin:$PATH'
+
+if [[ "${INSTALL_PREFIX}" != "/opt/nodejs" ]]; then
+  LINE="export PATH=${INSTALL_PREFIX}/current/bin:\$PATH"
+fi
+
+echo "Writing ${PROFILE_FILE}..."
+echo "${LINE}" | sudo tee "${PROFILE_FILE}" >/dev/null
+sudo chmod 0644 "${PROFILE_FILE}"
+
+echo
+echo "Done. Re-login or run:"
+echo "  source ${PROFILE_FILE}"
+echo "Check:"
+echo "  node -v"
+echo "  npm -v"

prepare-online.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage:
+#   ./prepare-online.sh [x64|arm64] [22.15.0]
+#
+# If version is omitted, script resolves the latest v22 release.
+
+ARCH="${1:-x64}"
+VERSION="${2:-}"
+
+case "${ARCH}" in
+  x64) NODE_ARCH="x64" ;;
+  arm64) NODE_ARCH="arm64" ;;
+  *)
+    echo "Unsupported arch: ${ARCH}. Use x64 or arm64."
+    exit 1
+    ;;
+esac
+
+if [[ -z "${VERSION}" ]]; then
+  # Pick latest v22 from official index without triggering pipefail/SIGPIPE.
+  INDEX_FILE="$(mktemp)"
+  curl -fsSL "https://nodejs.org/dist/index.tab" -o "${INDEX_FILE}"
+  VERSION="$(awk 'NR>1 && $1 ~ /^v22\./ {print substr($1,2); exit}' "${INDEX_FILE}")"
+  rm -f "${INDEX_FILE}"
+fi
+
+if [[ -z "${VERSION}" ]]; then
+  echo "Unable to resolve Node.js v22 version."
+  exit 1
+fi
+
+NODE_DIR="node-v${VERSION}-linux-${NODE_ARCH}"
+ARCHIVE="${NODE_DIR}.tar.xz"
+BASE_URL="https://nodejs.org/dist/v${VERSION}"
+OUT_DIR="bundle-node-v${VERSION}-linux-${NODE_ARCH}"
+
+mkdir -p "${OUT_DIR}"
+
+echo "Downloading Node.js v${VERSION} (${NODE_ARCH})..."
+curl -fL "${BASE_URL}/${ARCHIVE}" -o "${OUT_DIR}/${ARCHIVE}"
+curl -fL "${BASE_URL}/SHASUMS256.txt" -o "${OUT_DIR}/SHASUMS256.txt"
+
+echo "Verifying checksum..."
+(
+  cd "${OUT_DIR}"
+  sha256sum -c SHASUMS256.txt --ignore-missing | awk "/${ARCHIVE}: OK/"
+)
+
+cat > "${OUT_DIR}/INSTALL_ARGS.txt" <<EOF
+ARCH=${NODE_ARCH}
+VERSION=${VERSION}
+ARCHIVE=${ARCHIVE}
+EOF
+
+echo
+echo "Ready: ${OUT_DIR}"
+echo "Copy this folder to the offline Ubuntu 20.04 machine."