arb_sampler_objects-srgb-decode: 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/arb_sampler_objects-srgb-decode - from package: piglit

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

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