arb_texture_buffer_object-negative-unsupported: 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_texture_buffer_object-negative-unsupported - from package: piglit

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

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