> > > So I installed w3c-markup-validator 0.6.5 in my computer by using > > > 'apt-get install'. Installation was complete, I do not know how to use > > > it in my local machine. First of all, what is a command to start this > > > program? > > > >rpm -ql w3c-markup-validator > > That command will not start the program. It will list all the files in the > package and you can probably see from that list which file is the command > to run. Probably starts with /bin, /usr/bin, or a path like that although > that's not guaranteed. You can also use "rpm -qd" specifically to get the > listing of documentation files; and you can check the program's website for > more detailed instructions. By using a command: $ rpm -ql w3c-markup-validator, /usr/share/w3c-markup-validator/index.html is found. Mozilla browser shows HTML by double clicking this. This file may be a main display to show a result of HTML checking. So that, I made a symbolic link to Desktop as follows: ln -s /usr/share/w3c-markup-validator/index.html ~/Desktop/w3c-markup-validator Thank you very much for your help. Green. http://www.h7.dion.ne.jp/~greens/