kaya: 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/kaya - from package: kaya

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