airinv_parseInventory: 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/airinv_parseInventory - from package: airinv

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

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