cdffixtime: 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/cdffixtime - from package: cdftools

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