killbots: 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

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:

/usr/bin/killbots - from package: kdegames

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