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/font - from package: libxgks-dev

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