Package: docbook2X

"docbook2X" package binaries on CentOS:

/usr/bin/db2x_docbook2man /usr/bin/db2x_docbook2texi /usr/bin/db2x_manxml /usr/bin/db2x_texixml /usr/bin/db2x_xsltproc /usr/bin/sgml2xml-isoent /usr/bin/utf8trans

You may install this package on CentOS with yum install docbook2X

"docbook2X" package binaries on Debian:

/usr/bin/db2x_manxml /usr/bin/db2x_texixml /usr/bin/db2x_xsltproc /usr/bin/docbook2x-man /usr/bin/docbook2x-texi /usr/bin/sgml2xml-isoent /usr/bin/utf8trans

You may install this package on Debian with apt-get install docbook2X