geoff: 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/bin/geoff - from package: python-py2neo

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

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