vi: wget images from site

Sometimes when we visit a website, we are expressive by the images and want to download them. Manually download is bored, here is a quick way to download them in Linux platform.

• First use FireFox’s ‘Web Developer’ to get ‘generated resource’.
  ‘View Source’->‘View Generated Source’.
• Save the source in a file of Linux/Cygwin enviroment., such as $HOME/images/src_file.
• The next step we operate the src_file to get the images like following:

//0. locate to images/ folder.
$ cd images/

//1. strip images from html source.
$ grep -i '.png' src_file >img_file
$ grep -i '.jpg' src_file >>img_file
$ grep -i '.jpeg' src_file >>img_file
$ grep -i '.gif' src_file >>img_file

//2. extract href links.
$ vi img_file
:1,$s/.*http/http/g
:1,$s/".*//g

//3. use wget to download these images.
$ for i in `cat img_file`; do wget $i; done;

It is done within 1 minute, no matter how many and big the images are. The key is to use wget - which is a perfect tool for retrieving files using HTTP, HTTPS and FTP, the most widely-used Internet protocols.