dh_ocamlinit: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dh_ocamlinit - from package: dh-ocaml

You may install the required package with command apt-get install {package}

Error in other languages:
dh_ocamlinit: bevel nie gevind nie
dh_ocamlinit: comandă negăsită
dh_ocamlinit: comando não encontrado
dh_ocamlinit: commande introuvable
dh_ocamlinit: command not found
dh_ocamlinit: käsku ei ole
dh_ocamlinit: không tìm thấy lệnh
dh_ocamlinit: komanda nerasta
dh_ocamlinit: Kommando nicht gefunden.
dh_ocamlinit: kommandot finns inte
dh_ocamlinit: komut yok
dh_ocamlinit: nie znaleziono polecenia
dh_ocamlinit: níor aimsíodh an t-ordú
dh_ocamlinit: no se encontró la orden
dh_ocamlinit: no s'ha trobat l'ordre
dh_ocamlinit: opdracht niet gevonden
dh_ocamlinit: parancs nem található
dh_ocamlinit: perintah tidak ditemukan
dh_ocamlinit: príkaz nenájdený
dh_ocamlinit: příkaz nenalezen
dh_ocamlinit: команда не найдена
dh_ocamlinit: командата не е открита
dh_ocamlinit: 命令找不到
dh_ocamlinit: コマンドが見つかりません