keyd: 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/sbin/keyd - from package: onak

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