arb_shader_objects-clear-with-deleted: 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_shader_objects-clear-with-deleted - from package: piglit

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

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