FoX-config: 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

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/bin/FoX-config - from package: FoXlibf-devel

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