omniMapper: 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/omniMapper - from package: omniORB-servers

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

On Debian possible default full paths are:

/usr/bin/omniMapper - from package: omniorb

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

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