forge_get_config: 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 Debian possible default full paths are:

/usr/bin/forge_get_config - from package: gforge-common
/usr/share/gforge/bin/forge_get_config - from package: gforge-common

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

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