GWorkspace: 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/GWorkspace - from package: gworkspace.app

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