GraphicsCxxTests: 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/bin/GraphicsCxxTests - from package: vtk-testing

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

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