loadkeys: 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 CentOS possible default full paths are:

/bin/loadkeys - from package: kbd

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/bin/loadkeys - from package: kbd
/usr/bin/loadkeys - from package: kbd

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

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