arb_map_buffer_alignment-sanity_test: 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/arb_map_buffer_alignment-sanity_test - from package: piglit

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

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