goad-browser: 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/bin/goad-browser - from package: gnome-libs

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