laily
67291a9a50
Introduce ff script -h with auto descriptions, shared help.sh, and usage flags across script/*.sh. Co-authored-by: Cursor <cursoragent@cursor.com>
96 lines
2.5 KiB
Bash
Executable File
96 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# 清理 macOS / Linux 系统 DNS 缓存
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1091
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source "$SCRIPT_DIR/common/help.sh"
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usage() {
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cat <<'EOF'
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用法: dns-clean
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按当前操作系统清理 DNS 缓存:
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macOS: dscacheutil + mDNSResponder
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Linux: systemd-resolved / nscd / dnsmasq / unbound（自动检测）
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选项:
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-h, --help 显示此帮助
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说明: 非 root 时会自动使用 sudo。
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EOF
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}
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dotfile_help_requested "${1:-}" && dotfile_show_help
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set -e
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SUDO=""
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[ "$(id -u)" -ne 0 ] && SUDO="sudo"
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flush_macos() {
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echo "macOS: 清理 DNS 缓存..."
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$SUDO dscacheutil -flushcache
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$SUDO killall -HUP mDNSResponder 2>/dev/null || true
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$SUDO killall mDNSResponderHelper 2>/dev/null || true
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echo "macOS DNS 缓存已清理"
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}
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flush_linux() {
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local flushed=0
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echo "Linux: 清理 DNS 缓存..."
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if command -v resolvectl &>/dev/null; then
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if $SUDO resolvectl flush-caches 2>/dev/null; then
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echo " - systemd-resolved (resolvectl) 缓存已清理"
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flushed=1
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fi
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elif command -v systemd-resolve &>/dev/null; then
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if $SUDO systemd-resolve --flush-caches 2>/dev/null; then
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echo " - systemd-resolved (systemd-resolve) 缓存已清理"
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flushed=1
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fi
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fi
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if command -v systemctl &>/dev/null; then
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if systemctl is-active --quiet nscd 2>/dev/null; then
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$SUDO systemctl restart nscd
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echo " - nscd 已重启"
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flushed=1
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fi
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if systemctl is-active --quiet dnsmasq 2>/dev/null; then
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$SUDO systemctl restart dnsmasq
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echo " - dnsmasq 已重启"
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flushed=1
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fi
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if systemctl is-active --quiet unbound 2>/dev/null; then
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if command -v rndc &>/dev/null; then
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$SUDO rndc flush 2>/dev/null && echo " - unbound 缓存已清理" && flushed=1
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else
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$SUDO systemctl restart unbound
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echo " - unbound 已重启"
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flushed=1
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fi
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fi
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fi
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if [ "$flushed" -eq 0 ]; then
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echo "未检测到常见 DNS 缓存服务 (systemd-resolved / nscd / dnsmasq / unbound)"
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echo "若仍有问题，可尝试重启 NetworkManager 或检查本地 DNS 配置"
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exit 1
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fi
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echo "Linux DNS 缓存已清理"
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}
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case "$(uname -s)" in
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Darwin) flush_macos ;;
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Linux) flush_linux ;;
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*)
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echo "错误: 不支持的操作系统: $(uname -s)"
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exit 1
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;;
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esac
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