cfdg: 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/cfdg - from package: contextfree

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

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