django-admin.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 CentOS possible default full paths are:

/usr/lib/python2.6/site-packages/django/bin/django-admin.py - from package: Django14

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/lib/python3/dist-packages/django/bin/django-admin.py - from package: python3-django
/usr/lib/python2.7/dist-packages/django/bin/django-admin.py - from package: python-django

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

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