vertexid-beginend: 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/vertexid-beginend - from package: piglit

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

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