btee: 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/btee - from package: ruby-bcat

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

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