gfxboot-font: 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/gfxboot-font - from package: gfxboot-dev

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