milblistings.py: 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/milblistings.py - from package: mlbviewer

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