dpatch-list-patch: 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/dpatch-list-patch - from package: dpatch

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

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