fcc-read-to-pbo-after-clear: 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/fcc-read-to-pbo-after-clear - from package: piglit

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

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