debbugs-dbhash: 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/debbugs-dbhash - from package: debbugs

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

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