invgeod: 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/invgeod - from package: proj

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

On Debian possible default full paths are:

/usr/bin/invgeod - from package: proj-bin

You may install the required package with command apt-get install {package}

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