ZamTube: 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/ZamTube - from package: zam-plugins

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

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