unburden-home-dir: 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/unburden-home-dir - from package: unburden-home-dir

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

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