querybts: 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/querybts - from package: reportbug

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

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