When you run the xTuple installer under a Linux 64 bit O/S sometimes it returns to the command prompt with blank or no output.

./xTuple-4.5.0-linux-installer.run

Searching the forums gives hints, some are very dated http://www.xtuple.org/xTuple-3.3.0-Fedora-11-x86_64-How-To but still useful if you translate them to the latest package names.

So these are the old packages required under Fedora 11

yum -y install libSM.i586 
yum -y install glib2.i586
yum -y install libtar.i386
yum -y install libXrender.i586 
yum -y install fontconfig.i586 
yum -y install libXext.i586 
yum -y install krb5-libs.i586 
yum -y install compat-libstdc++-296.i586 
yum -y install libstdc++.i586

Which means the commands to run to install them on Fedora 20 are:

yum -y install krb5-libs.i686
yum -y install libXrender.i686
yum -y install libXext.i686
yum -y install compat-libstdc++-296.i686
yum -y install libSM.i686
yum -y install libstdc++.i686
yum -y install glib2.i686
yum -y install libtar.i686
yum -y install fontconfig.i686

Note the change from i386/i586 to i686

So after installing the above we get the following packages on Fedora 20

krb5-libs-1.11.5-10.fc20.i686
libXrender-0.9.8-2.fc20.i686
libXext-1.3.2-2.fc20.i686
compat-libstdc++-296-2.96-145.i686
libSM-1.2.1-6.fc20.i686
libstdc++-4.8.3-1.fc20.i686
glib2-2.38.2-2.fc20.i686
libtar-1.2.11-27.fc20.i686
fontconfig-2.11.0-2.fc20.i686

Hopefully that will give you the libs you need to run the ./xtuple installer and client