cstream: 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/cstream - from package: cstream

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

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