al-session-daemon: 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/al-session-daemon - from package: python-albatross-common

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

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