jocamlyacc: 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/jocamlyacc - from package: jocaml

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

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