splitfont: 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/splitfont - from package: kbd

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