nted: 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
/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/nted - from package: nted

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