wdf-dump: 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/wdf-dump - from package: wit

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

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