mkminifont: 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/mkminifont - from package: kon2

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