carrousel: 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/sbin/carrousel - from package: fair

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

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