/usr/lib/postgresql/9.4/bin/initdb
/usr/lib/postgresql/9.4/bin/pg_controldata
/usr/lib/postgresql/9.4/bin/pg_ctl
/usr/lib/postgresql/9.4/bin/pg_resetxlog
/usr/lib/postgresql/9.4/bin/pg_upgrade
/usr/lib/postgresql/9.4/bin/pg_xlogdump
/usr/lib/postgresql/9.4/bin/postgres
/usr/lib/postgresql/9.4/bin/postmaster
You may install this package on Debian with
apt-get
install postgresql-9.4