clip-plane-transformation: 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/clip-plane-transformation - from package: piglit

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

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