desklaunch: 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/desklaunch - from package: desklaunch

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

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