bibus: 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/bibus - from package: bibus

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

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