download all the stuff from a website by wget

Originally published on my old Blogger blog on May 2, 2013. Read the original post and its comments.

I want to download all the stuff from a website http://python.genedrift.org/

BEGINNING PYTHON FOR BIOINFORMATICS

I googled it, and found this:
http://community.linuxmint.com/tutorial/view/189

GNU Wget is a nice tool for downloading resources from the internet. The basic usage is wget url:

wget http://linuxreviews.org/

The power of wget is that you may download sites recursive, meaning you also get all pages (and images and other data) linked on the front page:

wget -r http://linuxreviews.org/

But many sites do not want you to download their entire site. To prevent this, they check how browsers identify. Many sites refuse you to connect or send a blank page if they detect you are not using a web-browser. You might get a message like:

Sorry, but the download manager you are using to view this site is not supported. We do not support use of such download managers as flashget, go!zilla, or getright

There is a very handy -U option for sites like this. Use

-U My-browser

to tell the site you are using some commonly accepted browser:

 wget  -r -p -U Mozilla http://www.stupidsite.com/restricedplace.html

A web-site owner will probably get upset if you attempt to download his entire site using a simple

wget http://foo.bar

command. However, the web-site owner will not even notice you if you limit the download transfer rate and pause between fetching files.
To make sure you are not manually added to a blacklist, the most important command line options are--limit-rate= and--wait= .
To pause 20 seconds between retrievals you should add

--wait=20

and to limit the download rate use something like

--limit-rate=20K

as this option defaults to bytes, add K to set KB/s.
Example:

wget --wait=20 --limit-rate=20K -r -p -U Mozilla http://www.stupidsite.com/restricedplace.html

A very handy option that guarantees wget will not download anything from the folders beneath the folder you want to acquire is:

--no-parent

Use this to make sure wget does not fetch more than it needs to if you just want to download the files in a folder.
Read the manual page for wget to learn more about GNU Wget. The full official manual is available here.
To install the Gnome front-end for wget click here.

And it worked well for me:)
wget is pre-installed in bio-linux.

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