/usr/bin/fcasplit
/usr/bin/nycheck
/usr/bin/nydiff
/usr/bin/nyindex
/usr/bin/nylist
/usr/bin/nymerge
/usr/bin/nypatchy
/usr/bin/nyshell
/usr/bin/nysynopt
/usr/bin/nytidy
/usr/bin/yexpand
/usr/bin/ypatchy
You may install this package on Debian with
apt-get
install nypatchy