go-latest

#!/usr/bin/env bash
set -euo pipefail

GO_VERSION="${GO_VERSION:-1.22.5}"   # change or export before running
INSTALL_DIR="${INSTALL_DIR:-/usr/local}"
PROFILE_FILE="${PROFILE_FILE:-$HOME/.bashrc}"

echo "📦 Downloading Go ${GO_VERSION}..."
curl -fsSL "https://go.dev/dl/go${GO_VERSION}.linux-amd64.tar.gz" -o /tmp/go.tar.gz

echo "🧹 Removing old Go install (if any)..."
sudo rm -rf "${INSTALL_DIR}/go"

echo "📂 Installing to ${INSTALL_DIR}..."
sudo tar -C "${INSTALL_DIR}" -xzf /tmp/go.tar.gz
rm /tmp/go.tar.gz

if ! grep -q 'export PATH=.*/go/bin' "${PROFILE_FILE}"; then
    echo "🔧 Adding Go to PATH in ${PROFILE_FILE}..."
    echo "export PATH=\$PATH:${INSTALL_DIR}/go/bin" >> "${PROFILE_FILE}"
fi

echo "✅ Go ${GO_VERSION} installed! Restart your shell or run:"
echo "    export PATH=\$PATH:${INSTALL_DIR}/go/bin"

"${INSTALL_DIR}/go/bin/go" version