morseALSA: 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/morseALSA - from package: morse

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

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