g3toxwd: 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/g3toxwd - from package: mgetty-fax

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

Error in other languages:
g3toxwd: bevel nie gevind nie
g3toxwd: comandă negăsită
g3toxwd: comando não encontrado
g3toxwd: commande introuvable
g3toxwd: command not found
g3toxwd: käsku ei ole
g3toxwd: không tìm thấy lệnh
g3toxwd: komanda nerasta
g3toxwd: Kommando nicht gefunden.
g3toxwd: kommandot finns inte
g3toxwd: komut yok
g3toxwd: nie znaleziono polecenia
g3toxwd: níor aimsíodh an t-ordú
g3toxwd: no se encontró la orden
g3toxwd: no s'ha trobat l'ordre
g3toxwd: opdracht niet gevonden
g3toxwd: parancs nem található
g3toxwd: perintah tidak ditemukan
g3toxwd: príkaz nenájdený
g3toxwd: příkaz nenalezen
g3toxwd: команда не найдена
g3toxwd: командата не е открита
g3toxwd: 命令找不到
g3toxwd: コマンドが見つかりません