gnome-moz-remote: 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/gnome-moz-remote - from package: gnome-libs

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