partclone.imager: 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/partclone.imager - from package: partclone

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

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