moodbar: 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/moodbar - from package: moodbar

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