monajat-applet: 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/monajat-applet - from package: monajat-applet

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