qapt-batch: 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/qapt-batch - from package: qapt-batch

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

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