gusload: 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/gusload - from package: awesfx

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

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