owtap: 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/owtap - from package: ow-tools

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

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