texredefine: 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/texredefine - from package: piglit

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

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