traceroute-nanog: 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/traceroute-nanog - from package: traceroute

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

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