tzap: 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/tzap - from package: dvb-apps

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

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