fbo-incomplete: 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-incomplete - from package: piglit

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

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