pygopherd: 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/sbin/pygopherd - from package: pygopherd

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

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