kbdinfo: 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/kbdinfo - from package: kbd

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

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