Package: syslinux

"syslinux" package binaries on CentOS:

/usr/bin/gethostip /usr/bin/isohybrid /usr/bin/memdiskfind /usr/bin/syslinux

You may install this package on CentOS with yum install syslinux

"syslinux" package binaries on Debian:

/usr/bin/syslinux

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