vidraft: 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/share/doc/mh-book/examples/mh/bin/vidraft - from package: mh-book

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

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