kayac: 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/kayac - from package: kaya

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

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