cdfmaskdmp: 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/cdfmaskdmp - from package: cdftools

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

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