prophet: 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/prophet - from package: emboss

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

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