fbo-generatemipmap-scissor: 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

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-generatemipmap-scissor - from package: piglit

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