200 lines
7.8 KiB
Bash
200 lines
7.8 KiB
Bash
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#!/usr/bin/env bash
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# shellcheck disable=SC2086
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# Downloads and installs the latest ctop (container terminal UI) from
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# https://github.com/bcicen/ctop/releases
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#
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# Supported platforms:
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# macOS : Intel (x86_64), Apple Silicon via Rosetta 2 (arm64)
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# Linux : x86_64 (amd64), aarch64/arm64, arm, ppc64le
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# Windows : Not supported — use install-ctop.ps1 (PowerShell)
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set -euo pipefail
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# ────────────────────────────────────────────
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# Constants
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# ────────────────────────────────────────────
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REPO="bcicen/ctop"
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API_URL="https://api.github.com/repos/${REPO}/releases"
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INSTALL_DIR="${HOME}/.local/bin"
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# ────────────────────────────────────────────
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# Utility functions (all stderr output)
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# ────────────────────────────────────────────
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info() { echo "[INFO] $*" >&2; }
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warn() { echo "[WARN] $*" >&2; }
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error() { echo "[ERROR] $*" >&2; exit 1; }
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success() { echo "[OK] $*" >&2; }
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# ────────────────────────────────────────────
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# Check required commands
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# ────────────────────────────────────────────
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for cmd in curl uname; do
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command -v "$cmd" &>/dev/null || error "'$cmd' command is required."
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done
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# Fallback: use python3 if jq is not available
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if command -v jq &>/dev/null; then
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_json_latest_tag() {
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jq -r '[.[] | select(.prerelease==false)] | .[0].tag_name'
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}
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else
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command -v python3 &>/dev/null || error "'jq' or 'python3' is required."
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_json_latest_tag() {
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python3 -c "
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import sys, json
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data = json.load(sys.stdin)
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for r in data:
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if not r.get('prerelease'):
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print(r['tag_name'])
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break
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"
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}
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fi
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# ────────────────────────────────────────────
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# OS / Architecture detection
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# ────────────────────────────────────────────
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# Returns: "<os>-<arch>" matching ctop's GitHub release asset naming
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detect_platform() {
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local os arch
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os="$(uname -s)"
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arch="$(uname -m)"
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case "$os" in
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# ── macOS ──────────────────────────────────────────────
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Darwin)
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case "$arch" in
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x86_64)
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echo "darwin-amd64"
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;;
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arm64)
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# ctop does not provide a native darwin-arm64 binary.
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# Use the amd64 binary via Rosetta 2 (works on Apple Silicon).
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if [[ "$(sysctl -n sysctl.proc_translated 2>/dev/null || echo 0)" == "1" ]] \
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|| command -v arch &>/dev/null; then
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warn "ctop has no native Apple Silicon build."
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warn "Using amd64 binary via Rosetta 2."
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echo "darwin-amd64"
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else
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error "No native Apple Silicon build available and Rosetta 2 is not installed." \
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"Install Rosetta 2: softwareupdate --install-rosetta"
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fi
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;;
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*)
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error "Unsupported macOS architecture: $arch"
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;;
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esac
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;;
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# ── Linux ──────────────────────────────────────────────
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Linux)
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case "$arch" in
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x86_64|amd64) echo "linux-amd64" ;;
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aarch64|arm64) echo "linux-arm64" ;;
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armv7l|armhf) echo "linux-arm" ;;
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ppc64le) echo "linux-ppc64le" ;;
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*)
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error "Unsupported Linux architecture: $arch"
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;;
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esac
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;;
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# ── Windows (Git Bash / MSYS2 / Cygwin) ───────────────
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MINGW*|MSYS*|CYGWIN*)
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error "Windows is not supported by this script. Use install-ctop.ps1 instead."
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;;
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*)
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error "Unsupported OS: $os (uname -a: $(uname -a))"
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;;
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esac
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}
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# ────────────────────────────────────────────
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# Get latest stable release tag
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# ────────────────────────────────────────────
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get_latest_tag() {
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info "Fetching latest release from GitHub API..."
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local releases
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releases="$(curl -fsSL "${API_URL}")" || error "Failed to call GitHub API."
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local tag
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tag="$(echo "$releases" | _json_latest_tag)"
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[[ -z "$tag" || "$tag" == "null" ]] && error "Could not find latest release tag."
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echo "$tag"
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}
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# ────────────────────────────────────────────
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# Build download URL
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# ────────────────────────────────────────────
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# ctop release assets follow the pattern: ctop-{version}-{os}-{arch}
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# where {version} has the 'v' prefix stripped from the git tag.
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build_download_url() {
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local tag="$1"
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local platform="$2" # e.g. darwin-amd64, linux-amd64
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local version="${tag#v}" # Remove 'v' prefix (v0.7.7 → 0.7.7)
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local filename="ctop-${version}-${platform}"
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echo "https://github.com/${REPO}/releases/download/${tag}/${filename}"
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}
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# ────────────────────────────────────────────
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# Download & install (raw binary — no archive extraction needed)
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# ────────────────────────────────────────────
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download_and_install() {
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local url="$1"
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local tmpdir
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tmpdir="$(mktemp -d)"
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trap '[[ -d "${tmpdir:-}" ]] && rm -rf "$tmpdir"' EXIT
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local filename
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filename="${url##*/}"
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info "Downloading: $url"
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curl -fsSL --progress-bar -o "${tmpdir}/${filename}" "$url" \
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|| error "Download failed: $url"
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# ctop provides raw binaries (not archives), so skip extraction
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local bin_src="${tmpdir}/${filename}"
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# Create install directory
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mkdir -p "$INSTALL_DIR"
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local install_path="${INSTALL_DIR}/ctop"
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info "Installing: ${install_path}"
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cp "$bin_src" "$install_path"
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chmod +x "$install_path"
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success "Installation complete!"
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info "Version check:"
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"$install_path" -v || true
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# PATH instructions
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if ! echo ":${PATH}:" | grep -q ":${INSTALL_DIR}:"; then
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warn "'${INSTALL_DIR}' is not in your PATH."
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warn "Add this line to your ~/.bashrc or ~/.zshrc:"
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warn " export PATH=\"\$HOME/.local/bin:\$PATH\""
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fi
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}
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# ────────────────────────────────────────────
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# Main
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# ────────────────────────────────────────────
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main() {
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local platform tag url
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platform="$(detect_platform)"
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info "Detected platform: $platform"
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tag="$(get_latest_tag)"
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info "Latest release: $tag"
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url="$(build_download_url "$tag" "$platform")"
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download_and_install "$url"
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}
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main "$@"
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