Package: nis

"nis" package binaries on Debian:

/usr/bin/ypcat /usr/bin/ypchfn /usr/bin/ypchsh /usr/bin/ypmatch /usr/bin/yppasswd /usr/bin/ypwhich /usr/sbin/rpc.yppasswdd /usr/sbin/rpc.ypxfrd /usr/sbin/ypbind /usr/sbin/yppoll /usr/sbin/yppush /usr/sbin/ypserv /usr/sbin/ypserv_test /usr/sbin/ypset /usr/sbin/yptest

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