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

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

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