Files conversion to text and html

Files conversion from doc,docx and pdf to text , html files.
Install following packages on centos Linux:

Text conversion:
yum install antiword(doc to text)
yum install pdftotext(pdf to text)
yum install odt2txt


HTML conversion:
yum install libreoffice

For Docx  to text 
download docx2txt-1.2
and copy the file docx2txt.pl to /usr/bin/docx2txt.pl