我是个菜鸟，但我试图使用在以下页面找到的 Vikas 的 Ruby 脚本从 wallpaperswide.com 下载壁纸：http: //vikas-reddy.blogspot.in/search/label/download
我正在运行 Windows 7 64 位，并在运行脚本之前下载并安装了以下内容：
rubyinstaller-1.9.3-p125.exe
wget-1.11.4-1-setup.exe
如何在 Windows 上使用来自 Jruby 的 nokogiri？
我没有安装“open-uri”，因为我不知道该怎么做。
我复制了脚本并将其保存为 txt 文件并将扩展名更改为 .rb 并运行该文件，但命令提示符窗口中出现以下错误消息：命令的语法不正确。
请提供详细帮助。谢谢。
脚本如下：
#!/usr/bin/env ruby
#
# Vikas Reddy
#
# A little script to download ALL the wallpapers of a given
# resolution from http://www.wallpaperswide.com/
#
# Requirements
# ============
# Ruby Version: 1.9.2
# Gems: nokogiri, open-uri
# Other programs: wget
#
#
# Available Resolutions
# =====================
#
# Wide
#
# * 16:10 960x600
# * 16:10 1152x720
# * 16:10 1280x800
# * 16:10 1440x900
# * 16:10 1680x1050
# * 16:10 1920x1200
# * 16:10 2560x1600
# * 16:10 3840x2400
# * 16:10 5120x3200
# * 5:3 800x480
# * 5:3 1280x768
#
# HD
#
# * 16:9 960x540
# * 16:9 1024x576
# * 16:9 1280x720
# * 16:9 1366x768
# * 16:9 1600x900
# * 16:9 1920x1080
# * 16:9 2048x1152
# * 16:9 2400x1350
# * 16:9 2560x1440
# * 16:9 3554x1999
# * 16:9 3840x2160
#
# Standard
#
# * 4:3 800x600
# * 4:3 1024x768
# * 4:3 1152x864
# * 4:3 1280x960
# * 4:3 1400x1050
# * 4:3 1440x1080
# * 4:3 1600x1200
# * 4:3 1680x1260
# * 4:3 1920x1440
# * 4:3 2048x1536
# * 4:3 2560x1920
# * 4:3 2800x2100
# * 4:3 3200x2400
# * 4:3 4096x3072
# * 5:4 1280x1024
# * 5:4 2560x2048
# * 5:4 3750x3000
#
# Mobile Ratio
#
# * VGA 240x320
# * VGA 480x640
# * VGA 320x240
# * VGA 640x480
# * WVGA 240x400
# * WVGA 480x800
# * WVGA 400x240
# * WVGA 800x480
# * HVGA 320x480
# * HVGA 480x320
# * HVGA 640x960
# * HVGA 960x640
# * iPad 1024x768
# * iPad 768x1024
# * HD 16:9 480x272
# * HD 16:9 272x480
# * Phone 176x220
# * Phone 220x176
#
# Dual
#
# * 4:3 1600x600
# * 4:3 2048x768
# * 4:3 2304x864
# * 4:3 2560x960
# * 4:3 2800x1050
# * 4:3 2880x1080
# * 4:3 3200x1200
# * 4:3 3360x1260
# * 4:3 3840x1440
# * 4:3 4096x1536
# * 4:3 5120x1920
# * 4:3 5600x2100
# * 4:3 6400x2400
# * 4:3 8192x3072
# * 5:4 2560x1024
# * 5:4 5120x2048
# * 5:4 7500x3000
# * 5:4 10240x4096
# * 16:10 1920x600
# * 16:10 2304x720
# * 16:10 2560x800
# * 16:10 2880x900
# * 16:10 3360x1050
# * 16:10 3840x1200
# * 16:10 5120x1600
# * 16:10 7680x2400
# * 16:10 10240x3200
# * 5:3 1600x480
# * 5:3 2560x768
# * 16:9 1920x540
# * 16:9 2048x576
# * 16:9 2560x720
# * 16:9 3200x900
# * 16:9 3840x1080
# * 16:9 4096x1152
# * 16:9 4800x1350
# * 16:9 5120x1440
# * 16:9 7108x2000
# * 16:9 7680x2160
# * 3:2 2880x960
# * 3:2 4000x1333
# * 3:2 2304x768
#
# Other
#
# * 3:2 1152x768
# * 3:2 1440x960
# * 3:2 2000x1333
require 'open-uri'
require 'nokogiri'
Resolution = "1600x900"
Base_URL = "http://wallpaperswide.com/#{Resolution}-wallpapers-r/page/"
Output_Directory = "/home/vikas/Wallpapers/"
# Create the Output_Directory if needed
`mkdir -p "#{Output_Directory}"`
(1..2492).each do |page_num|
# Go page by page
url = Base_URL + page_num.to_s
# Parse html
f = open(url)
doc = Nokogiri::HTML(f)
# Loop over image-boxes
doc.css("div.thumb").each do |wallp|
# Extract wallpaper subpage url
wallp.css("div[onclick]").attr("onclick").value =~ /prevframe_show\('(.*)'\)/
subpage_url = $1
subpage_url =~ %r|http://wallpaperswide\.com/[^/]+/([\w\d]+)\.html|
# Generate url of the required wallpaper
wallp_url = %|http://wallpaperswide.com/download/#{$1}-#{Resolution}.jpg|
# Download... with a user-agent parameter just in case...
# use '--limit-rate=100k' to limit download speed
`wget -c -U "Firefox/4.5.6" -P "#{Output_Directory}" "#{wallp_url}"`
end
end