rc.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/lib/news/bin/rc.news - from package: inn2

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

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