spectool_net: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/spectool_net - from package: spectools

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