ir_ab_names: 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/bin/ir_ab_names - from package: polyorb-servers

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

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