gst-load: 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/gst-load - from package: gnu-smalltalk

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

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