aoe-stat: 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/sbin/aoe-stat - from package: aoetools

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

On Debian possible default full paths are:

/sbin/aoe-stat - from package: aoetools

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