jocamlopt: 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/jocamlopt - from package: jocaml

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

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