gopchop: 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/gopchop - from package: gopchop

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

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