cube2font: 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
/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/cube2font - from package: cube2font

You may install the required package with command apt-get install {package}
Error in other languages:
cube2font: bevel nie gevind nie
cube2font: comandă negăsită
cube2font: comando não encontrado
cube2font: commande introuvable
cube2font: command not found
cube2font: käsku ei ole
cube2font: không tìm thấy lệnh
cube2font: komanda nerasta
cube2font: Kommando nicht gefunden.
cube2font: kommandot finns inte
cube2font: komut yok
cube2font: nie znaleziono polecenia
cube2font: níor aimsíodh an t-ordú
cube2font: no se encontró la orden
cube2font: no s'ha trobat l'ordre
cube2font: opdracht niet gevonden
cube2font: parancs nem található
cube2font: perintah tidak ditemukan
cube2font: príkaz nenájdený
cube2font: příkaz nenalezen
cube2font: команда не найдена
cube2font: командата не е открита
cube2font: 命令找不到
cube2font: コマンドが見つかりません