prophecy: 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/prophecy - from package: emboss

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

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