getteximage-simple: 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/getteximage-simple - from package: piglit

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

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