buffindexed_d: 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/lib/news/bin/buffindexed_d - from package: inn2

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

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