Package: vsftpd

"vsftpd" package binaries on CentOS:

/usr/sbin/vsftpd

You may install this package on CentOS with yum install vsftpd

"vsftpd" package binaries on Debian:

/usr/bin/vsftpdwho /usr/sbin/vsftpd

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