screenlets-daemon: 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/screenlets-daemon - from package: screenlets

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

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