morph: 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/morph - from package: xmorph

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

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