kgb-bot: 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/sbin/kgb-bot - from package: kgb-bot

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