fdo31934: 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/fdo31934 - from package: piglit

You may install the required package with command yum install {package}
Error in other languages:
fdo31934: bevel nie gevind nie
fdo31934: comandă negăsită
fdo31934: comando não encontrado
fdo31934: commande introuvable
fdo31934: command not found
fdo31934: käsku ei ole
fdo31934: không tìm thấy lệnh
fdo31934: komanda nerasta
fdo31934: Kommando nicht gefunden.
fdo31934: kommandot finns inte
fdo31934: komut yok
fdo31934: nie znaleziono polecenia
fdo31934: níor aimsíodh an t-ordú
fdo31934: no se encontró la orden
fdo31934: no s'ha trobat l'ordre
fdo31934: opdracht niet gevonden
fdo31934: parancs nem található
fdo31934: perintah tidak ditemukan
fdo31934: príkaz nenájdený
fdo31934: příkaz nenalezen
fdo31934: команда не найдена
fdo31934: командата не е открита
fdo31934: 命令找不到
fdo31934: コマンドが見つかりません