fs-execution-ordering: 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/lib64/piglit/bin/fs-execution-ordering - from package: piglit

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

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