tex-miplevel-selection: 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/tex-miplevel-selection - from package: piglit

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

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