fbo-srgb: command not found

Have You tried accessing the binary with the full path?

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/fbo-srgb - from package: piglit

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