fp-incomplete-tex: 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/fp-incomplete-tex - from package: piglit

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

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