oggz-comment: 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 CentOS possible default full paths are:

/usr/bin/oggz-comment - from package: liboggz

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/oggz-comment - from package: oggz-tools

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

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