# 使用 Homebrew, apk, apt, MacPorts, Nix 安装 htpdate 查看 htpdate 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。 ## 安装 ```sh sudo av install brew:htpdate ``` 其他安装命令: ### macOS - Homebrew (100%): ```sh brew install htpdate ``` 证据: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install htpdate ``` 证据: MacPorts ports tree: net/htpdate/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add htpdate ``` 证据: Alpine Linux edge package indexes: htpdate from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install htpdate ``` 证据: Debian stable package indexes: htpdate from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - Nix (92%): ```sh nix profile install nixpkgs#htpdate ``` 证据: nixpkgs package indexes: pkgs/by-name/ht/htpdate/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## 软件包事实 - **软件包键:** brew:htpdate - **软件包管理器:** Homebrew - **版本:** 2.0.2 - **来源摘要:** Synchronize time with remote web servers - **主页:** - **仓库:** - **最后更新:** 2026-05-06T23:49:07Z - **已生成:** 2026-08-03T19:37:03+00:00 ## 可执行文件 - htpdate (别名) ## 安装行为 - Bottle: 不可用 ## 版本和新鲜度 - 页面生成时间: 2026-08-03 - 管理器版本: 2.0.2 ## 项目历史与用法 htpdate is a small HTTP Time Protocol utility that synchronizes a computer's clock from timestamps in web-server HTTP headers. It is a niche networking package for environments where NTP is blocked, unavailable, or inconvenient but outbound HTTP works. ### 项目历史 The upstream site and repository describe HTP as synchronizing time with web servers as reference sources. htpdate retrieves date and time through HTTP requests, can behave similarly to a browser, works through proxy servers, and can run as a daemon for ongoing synchronization. The project preserves a pragmatic limitation in its own documentation: usual accuracy is within about 0.5 seconds and can improve with multiple servers, but users needing better time discipline should use an NTP-family package. That framing explains htpdate's evolution as a fallback or constrained-network utility rather than a replacement for NTP, OpenNTPD, or chrony. ### 采用历史 The input package facts record htpdate in Homebrew, Debian, Ubuntu, MacPorts, Nix, and Alpine. That packaging spread is notable for a small tool because its value is situational: it becomes useful exactly on machines and networks where the usual UDP-based time-sync path is not available. ### 使用方式 htpdate is used to query one or more web servers, estimate clock offset from HTTP date headers, and either report or set/adjust local time. The man page and README emphasize proxy support, daemon use, IPv4/IPv6 options, HTTP/1.0 versus HTTP/1.1 behavior, and the tradeoff between convenience and precision. ### 为什么软件包爱好者会关心 For package nerds, htpdate is interesting because it is the kind of tiny utility that justifies a package slot through an edge case. It exists for restricted networks, proxy-only hosts, rescue scenarios, and systems where installing a full time-sync stack is more machinery than the job requires. ### 时间线 - 2021: The twekkel/htpdate tag stream includes v1.3.0 from December. - 2024: The tag stream includes v2.0.0 from September. - 2024: Alpine package metadata records htpdate 2.0.0 in the community repository. - Package-manager era: The input package facts record htpdate in Homebrew, Debian, Ubuntu, MacPorts, Nix, and Alpine. ### Related projects - htpdate is related to NTP clients such as ntpdate, ntpd, OpenNTPD, and chrony, but trades precision for HTTP reachability and proxy compatibility. The same maintainer also publishes `httpdate`, another HTTP-based time synchronization tool with a precision-oriented approach. ### 来源 - - - - - - - - ## 安全说明 broad file, network, media, or database tool signal. - **Geiger 风险:** blue / 中 - broad file, network, media, or database tool signal ## 其他软件包管理器记录 - Debian apt - htpdate - 1.3.7-2+b2: normalized package name match | Debian stable package indexes: htpdate from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | HTTP based time synchronization tool | https://github.com/twekkel/htpdate - Nix - htpdate: normalized package name match | nixpkgs package indexes: pkgs/by-name/ht/htpdate/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - htpdate - 1.3.7-2build2: normalized package name match | Ubuntu 24.04 LTS package indexes: htpdate from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | HTTP based time synchronization tool | https://github.com/twekkel/htpdate - apk - htpdate - 2.0.0-r0: normalized package name match | Alpine Linux edge package indexes: htpdate from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | HTTP Time protocol | https://github.com/twekkel/htpdate - apk - htpdate-doc - 2.0.0-r0: normalized package name match | Alpine Linux edge package indexes: htpdate-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | HTTP Time protocol (documentation) | https://github.com/twekkel/htpdate - apk - htpdate-openrc - 2.0.0-r0: normalized package name match | Alpine Linux edge package indexes: htpdate-openrc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | HTTP Time protocol (OpenRC init scripts) | https://github.com/twekkel/htpdate - MacPorts - htpdate: normalized package name match | MacPorts ports tree: net/htpdate/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/htpdate.yml](https://github.com/mxcl/pkgdb/blob/main/combined/htpdate.yml) ## 来源 - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph