kdrill: 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/kdrill - from package: kdrill

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

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