copyteximage-clipping: 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/copyteximage-clipping - from package: piglit

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

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