xbmc-standalone: 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/xbmc-standalone - from package: xbmc

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

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