ovdb_stat: 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/ovdb_stat - from package: inn2

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

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