fbo-maxsize: 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-maxsize - from package: piglit

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