partimaged-passwd: 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/sbin/partimaged-passwd - from package: partimage-server

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

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