go-show-assocs-by-node: 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/go-show-assocs-by-node - from package: libgo-perl

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