xkbset: command not found

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/xkbset - from package: xkbset

You may install the required package with command apt-get install {package}

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