fbo-depthstencil: 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-depthstencil - from package: piglit

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