cdfspice: 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/cdfspice - from package: cdftools

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