cdshuffle: 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/cdshuffle - from package: cdtool

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

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