fbo-alphatest-nocolor: 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/fbo-alphatest-nocolor - from package: piglit

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

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