arb_geometry_shader4-program-parameter-vertices-out: 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_geometry_shader4-program-parameter-vertices-out - from package: piglit

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

Error in other languages:
arb_geometry_shader4-program-parameter-vertices-out: bevel nie gevind nie
arb_geometry_shader4-program-parameter-vertices-out: comandă negăsită
arb_geometry_shader4-program-parameter-vertices-out: comando não encontrado
arb_geometry_shader4-program-parameter-vertices-out: commande introuvable
arb_geometry_shader4-program-parameter-vertices-out: command not found
arb_geometry_shader4-program-parameter-vertices-out: käsku ei ole
arb_geometry_shader4-program-parameter-vertices-out: không tìm thấy lệnh
arb_geometry_shader4-program-parameter-vertices-out: komanda nerasta
arb_geometry_shader4-program-parameter-vertices-out: Kommando nicht gefunden.
arb_geometry_shader4-program-parameter-vertices-out: kommandot finns inte
arb_geometry_shader4-program-parameter-vertices-out: komut yok
arb_geometry_shader4-program-parameter-vertices-out: nie znaleziono polecenia
arb_geometry_shader4-program-parameter-vertices-out: níor aimsíodh an t-ordú
arb_geometry_shader4-program-parameter-vertices-out: no se encontró la orden
arb_geometry_shader4-program-parameter-vertices-out: no s'ha trobat l'ordre
arb_geometry_shader4-program-parameter-vertices-out: opdracht niet gevonden
arb_geometry_shader4-program-parameter-vertices-out: parancs nem található
arb_geometry_shader4-program-parameter-vertices-out: perintah tidak ditemukan
arb_geometry_shader4-program-parameter-vertices-out: príkaz nenájdený
arb_geometry_shader4-program-parameter-vertices-out: příkaz nenalezen
arb_geometry_shader4-program-parameter-vertices-out: команда не найдена
arb_geometry_shader4-program-parameter-vertices-out: командата не е открита
arb_geometry_shader4-program-parameter-vertices-out: 命令找不到
arb_geometry_shader4-program-parameter-vertices-out: コマンドが見つかりません