如何在Linux中递归搜索FTP服务器？适配DD-WRT固件更新场景

Great question—dealing with FTP repositories when Google’s results fall short is super frustrating, especially for something as critical as keeping your router’s firmware up to date. Let’s break down a few reliable, actionable methods to recursively browse and search the dd-wrt FTP server tailored to your needs:

1. Use Command-Line FTP Tools (Fast & Flexible) #

Command-line tools are perfect for quick recursive searches without extra software bloat. Two top options:

lftp (Best for Interactive Search) #

lftp is a powerful command-line FTP client with built-in recursive search capabilities. Here’s how to use it:

• First, install lftp (on Linux: sudo apt install lftp; on macOS use Homebrew: brew install lftp; Windows can use WSL or download a pre-built binary).
• Connect to the DD-WRT FTP server:

  lftp ftp.dd-wrt.com
  

• Once connected, run a recursive search for your router model (replace YOUR_ROUTER_MODEL with your actual model, e.g., RT-AC68U):

  find / -name "*YOUR_ROUTER_MODEL*" -type f
  

  This will list all firmware files matching your model. You can also use ls -R /downloads/router/ to recursively list the entire router firmware directory structure if you prefer browsing manually.
• If you want to download a specific directory (e.g., all files for your model), use the mirror command:

  mirror /downloads/router/Brand/YourModel/ ./local-ddwrt-firmware/
  

wget (For Recursive Download & Local Search) #

If you’d rather download a subset of the FTP tree to search locally (which is faster for repeated lookups), use wget:

wget -r --no-parent --reject="index.html*" ftp://ftp.dd-wrt.com/downloads/router/Brand/YourModel/

• -r enables recursive download
• --no-parent prevents wget from climbing up to parent directories
• --reject skips any auto-generated index files (if present)
  Once downloaded, you can use your system’s local search tool (like grep or Spotlight) to find specific firmware versions.

2. GUI FTP Clients (User-Friendly) #

If you prefer a graphical interface, these clients make recursive browsing and search straightforward:

• FileZilla: Connect to ftp.dd-wrt.com (anonymous login works). Right-click any directory (start with /downloads/router/) and select Search files. Check the Recursive box, enter your router model, and hit search. You can also expand directories manually to browse the tree.
• WinSCP: Use the Search feature (Ctrl+F) with the All subfolders option enabled. It also supports syncing local directories with the FTP server if you want to keep a local copy.
• Cyberduck: Connect via FTP, right-click a folder, and choose Search to run a recursive search through subdirectories.

3. Pro Tips to Speed Up Your Search #

• Know the FTP Structure: DD-WRT organizes firmware under /downloads/router/[Brand]/[Model]/, so start by navigating to your router’s brand directory first—this narrows your search drastically instead of scanning the entire server.
• Check Version Subdirectories: Many models have separate folders for stable, beta, or older firmware versions (e.g., stable/, beta/), so don’t overlook those if you need a specific release.
• Anonymous Login: You don’t need a username/password for ftp.dd-wrt.com—just use anonymous login when prompted.

内容的提问来源于stack exchange，提问作者Kyle H