dvbcut: 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/dvbcut - from package: dvbcut

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

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