fp-fragment-position: 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/fp-fragment-position - from package: piglit

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

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