incomplete-texture: 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/incomplete-texture - from package: piglit

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

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