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

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

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