xacobeo: 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/xacobeo - from package: xacobeo

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

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