jocamllex.opt: 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/jocamllex.opt - from package: jocaml

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

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