murmur: 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/murmur - from package: murmur

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