1 files changed, 8 insertions, 8 deletions

diff --git a/documentation/ref-manual/introduction.xml b/documentation/ref-manual/introduction.xml
index 5250e26be7..ee5d0f1d9e 100644
--- a/documentation/ref-manual/introduction.xml
+++ b/documentation/ref-manual/introduction.xml
@@ -267,27 +267,27 @@
                         Packages needed to build an image for a headless
                         system:
                         <literallayout class='monospaced'>
-     $ sudo yum install &FEDORA_HOST_PACKAGES_ESSENTIAL;
+     $ sudo dnf install &FEDORA_HOST_PACKAGES_ESSENTIAL;
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis>
                         Packages recommended if the host system has graphics
                         support or if you are going to use the Eclipse
                         IDE:
                         <literallayout class='monospaced'>
-     $ sudo yum install SDL-devel xterm perl-Thread-Queue
+     $ sudo dnf install SDL-devel xterm perl-Thread-Queue
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Documentation:</emphasis>
                         Packages needed if you are going to build out the
                         Yocto Project documentation manuals:
                         <literallayout class='monospaced'>
-     $ sudo yum install make docbook-style-dsssl docbook-style-xsl \
+     $ sudo dnf install make docbook-style-dsssl docbook-style-xsl \
      docbook-dtds docbook-utils fop libxslt dblatex xmlto xsltproc
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>ADT Installer Extras:</emphasis>
                         Packages needed if you are going to be using the
                         <ulink url='&YOCTO_DOCS_ADT_URL;#using-the-adt-installer'>Application Development Toolkit (ADT) Installer</ulink>:
                         <literallayout class='monospaced'>
-     $ sudo yum install autoconf automake libtool glib2-devel
+     $ sudo dnf install autoconf automake libtool glib2-devel
                         </literallayout></para></listitem>
                 </itemizedlist>
             </para>
@@ -352,27 +352,27 @@
                         Packages needed to build an image for a headless
                         system:
                         <literallayout class='monospaced'>
-     $ sudo yum install &CENTOS_HOST_PACKAGES_ESSENTIAL;
+     $ sudo dnf install &CENTOS_HOST_PACKAGES_ESSENTIAL;
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Graphical and Eclipse Plug-In Extras:</emphasis>
                         Packages recommended if the host system has graphics
                         support or if you are going to use the Eclipse
                         IDE:
                         <literallayout class='monospaced'>
-     $ sudo yum install SDL-devel xterm
+     $ sudo dnf install SDL-devel xterm
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>Documentation:</emphasis>
                         Packages needed if you are going to build out the
                         Yocto Project documentation manuals:
                         <literallayout class='monospaced'>
-     $ sudo yum install make docbook-style-dsssl docbook-style-xsl \
+     $ sudo dnf install make docbook-style-dsssl docbook-style-xsl \
      docbook-dtds docbook-utils fop libxslt dblatex xmlto xsltproc
                         </literallayout></para></listitem>
                     <listitem><para><emphasis>ADT Installer Extras:</emphasis>
                         Packages needed if you are going to be using the
                         <ulink url='&YOCTO_DOCS_ADT_URL;#using-the-adt-installer'>Application Development Toolkit (ADT) Installer</ulink>:
                         <literallayout class='monospaced'>
-     $ sudo yum install autoconf automake libtool glib2-devel
+     $ sudo dnf install autoconf automake libtool glib2-devel
                         </literallayout></para></listitem>
                 </itemizedlist>
             </para>