cfdpadmin: 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

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/cfdpadmin - from package: ion

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