cwdreg: 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/cwdreg - from package: freewnn-cserver

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

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