netreport: 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:

/sbin/netreport - from package: initscripts

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

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