initialized-texmemory: 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

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/initialized-texmemory - from package: piglit

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