vdesk: 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/vdesk - from package: vdesk

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