snnewsq: 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/sbin/snnewsq - from package: sn

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

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