69 lines
1.4 KiB
Bash
69 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
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SOURCE_SCRIPT="${SCRIPT_DIR}/iptables-forward.sh"
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TARGET_BIN=${INSTALL_TARGET:-/usr/local/bin/iptables-forward}
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usage() {
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cat <<USAGE
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用法:
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sudo ./install.sh
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sudo ./install.sh --uninstall
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说明:
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- 仅创建符号链接，不复制源码。
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- 默认链接到 /usr/local/bin/iptables-forward。
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- 可通过 INSTALL_TARGET 自定义目标路径。
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USAGE
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}
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require_root() {
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if (( EUID != 0 )); then
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printf '请使用 root 或 sudo 执行安装脚本。\n' >&2
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exit 2
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fi
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}
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install_link() {
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[[ -f ${SOURCE_SCRIPT} ]] || {
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printf '未找到入口脚本: %s\n' "${SOURCE_SCRIPT}" >&2
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exit 1
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}
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mkdir -p "$(dirname -- "${TARGET_BIN}")"
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ln -sfn "${SOURCE_SCRIPT}" "${TARGET_BIN}"
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chmod 755 "${SOURCE_SCRIPT}"
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printf '已创建链接: %s -> %s\n' "${TARGET_BIN}" "${SOURCE_SCRIPT}"
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}
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uninstall_link() {
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if [[ -L ${TARGET_BIN} || -e ${TARGET_BIN} ]]; then
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rm -f "${TARGET_BIN}"
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printf '已删除链接: %s\n' "${TARGET_BIN}"
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else
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printf '未发现已安装链接: %s\n' "${TARGET_BIN}"
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fi
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}
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main() {
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case ${1:-install} in
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--help|-h)
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usage
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;;
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install)
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require_root
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install_link
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;;
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--uninstall|uninstall)
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require_root
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uninstall_link
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;;
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*)
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usage >&2
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exit 1
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;;
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esac
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}
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main "$@"
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