cvtbatch: 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/lib/news/bin/cvtbatch - from package: inn2
/usr/lib/news/bin/cvtbatch - from package: inn

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

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