newsq: 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/newsq - from package: leafnode

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

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