vbo-map-unsync: 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
/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/vbo-map-unsync - from package: piglit

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