pristine-xz: 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/pristine-xz - from package: pristine-tar

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

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