cdfnamelist: 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/cdfnamelist - from package: cdftools

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

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