Most of you heard about offline web browsers or may used in Windows. For new people, ofline browser is an application used to mirror (make a copy) of your desired web sites so that you can access the sites when you are not able to access Internet. Normally i use this program to mirror sites that provide good and detail documentation but will not provide a download option in any format so that i can keep it for future. Using this type application you can save an url and it's sub-urls.
You can get the latest version from the httrack site http://www.httrack.com .You can download both windows and Linux Packages from the site.
If you are using yum then the installation is very simple just try
# yum install httrack
I am recommending to use the source Package. Just read the INSTALL file for installation procedure.
After installation try the “man httrack”
To download an url you have to use something as follows.
The site will be mirrored on you current directory and try to open index.html in any web browser to access the data. You can use you proxy settings to download the sites the man page will give you more information.