go2: command not found

Have You tried accessing the binary with the full path?

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/go2 - from package: go2

You may install the required package with command apt-get install {package}
Error in other languages:
go2: bevel nie gevind nie
go2: comandă negăsită
go2: comando não encontrado
go2: commande introuvable
go2: command not found
go2: käsku ei ole
go2: không tìm thấy lệnh
go2: komanda nerasta
go2: Kommando nicht gefunden.
go2: kommandot finns inte
go2: komut yok
go2: nie znaleziono polecenia
go2: níor aimsíodh an t-ordú
go2: no se encontró la orden
go2: no s'ha trobat l'ordre
go2: opdracht niet gevonden
go2: parancs nem található
go2: perintah tidak ditemukan
go2: príkaz nenájdený
go2: příkaz nenalezen
go2: команда не найдена
go2: командата не е открита
go2: 命令找不到
go2: コマンドが見つかりません