news: 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/news - from package: sysnews

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

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