canberra: 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/canberra - from package: python-mlpy

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

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