arb_gpu_shader5-minmax: 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_gpu_shader5-minmax - from package: piglit

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

Error in other languages:
arb_gpu_shader5-minmax: bevel nie gevind nie
arb_gpu_shader5-minmax: comandă negăsită
arb_gpu_shader5-minmax: comando não encontrado
arb_gpu_shader5-minmax: commande introuvable
arb_gpu_shader5-minmax: command not found
arb_gpu_shader5-minmax: käsku ei ole
arb_gpu_shader5-minmax: không tìm thấy lệnh
arb_gpu_shader5-minmax: komanda nerasta
arb_gpu_shader5-minmax: Kommando nicht gefunden.
arb_gpu_shader5-minmax: kommandot finns inte
arb_gpu_shader5-minmax: komut yok
arb_gpu_shader5-minmax: nie znaleziono polecenia
arb_gpu_shader5-minmax: níor aimsíodh an t-ordú
arb_gpu_shader5-minmax: no se encontró la orden
arb_gpu_shader5-minmax: no s'ha trobat l'ordre
arb_gpu_shader5-minmax: opdracht niet gevonden
arb_gpu_shader5-minmax: parancs nem található
arb_gpu_shader5-minmax: perintah tidak ditemukan
arb_gpu_shader5-minmax: príkaz nenájdený
arb_gpu_shader5-minmax: příkaz nenalezen
arb_gpu_shader5-minmax: команда не найдена
arb_gpu_shader5-minmax: командата не е открита
arb_gpu_shader5-minmax: 命令找不到
arb_gpu_shader5-minmax: コマンドが見つかりません