idesk: 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/idesk - from package: idesk

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