point-line-no-cull: 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/point-line-no-cull - from package: piglit

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

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