ganesha_stats: command not found

Have You tried accessing the binary with the full path?

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/ganesha_stats - from package: nfs-ganesha-utils

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