csdebugger: 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/csdebugger - from package: csound

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

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