bantool-ratbox: 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/sbin/bantool-ratbox - from package: ircd-ratbox

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

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