php - Instaling magento from command line errors -

i follow guide.

http://devdocs.magento.com/guides/v2.1/install-gde/install/cli/install-cli-install.html

i tried run web installatin got stucked try this.

when go mysql root

mysql> show databases; +--------------------+ | database           | +--------------------+ | information_schema | | mysql              | | performance_schema | | sys                | +--------------------+ 4 rows in set (0,00 sec) 

there not tables magento.

so run command given in link

magento setup:install --base-url=http://127.0.0.1/magento2/ \ --db-host=localhost --db-name=magento --db-user=magento --db-password=magento \ --admin-firstname=magento --admin-lastname=user --admin-email=user@example.com \ --admin-user=admin --admin-password=admin123 --language=en_us \ --currency=usd --timezone=america/chicago --use-rewrites=1 

but mine cant run magento use ./magento

root@vegan:/var/www/html/magento2/bin# ./magento setup:install --base-url=http://127.0.0.1/magento2/ --db-host=localhost --db-name=magento --db-user=magento --db-password=magento --admin-firstname=magento --admin-lastname=user --admin-email=user@example.com --admin-user=admin --admin-password=admin123 --language=en_us --currency=usd --timezone=america/chicago --use-rewrites=1 sqlstate[hy000] [1045] access denied user 'magento'@'localhost' (using password: yes)      [invalidargumentexception]      parameter validation failed   

and other green writings

setup:install [--backend-frontname="..."] [--key="..."] [--session-save="..."] [--definition-format="..."] [--db-host="..."] 

[--db-name="..."] [--db-user="..."] [--db-engine="..."] [--db-password="..."] [--db-prefix="..."] [--db-model="..."] [--db-init-statements="..."] [-s|--skip-db-validation] [--http-cache-hosts="..."] [--base-url="..."] [--language="..."] [--timezone="..."] [--currency="..."] [--use-rewrites="..."] [--use-secure="..."] [--base-url-secure="..."] [--use-secure-admin="..."] [--admin-use-security-key="..."] [--admin-user="..."] [--admin-password="..."] [--admin-email="..."] [--admin-firstname="..."] [--admin-lastname="..."] [--cleanup-database] [--sales-order-increment-prefix="..."] [--use-sample-data] [--magento-init-params="..."]

it says in informaton

--db-user  user name of magento database instance owner.  default root. 

so use mysql password , admin name it. time works errors

root@vegan:/var/www/html/magento2/bin# ./magento setup:install --base-url=http://127.0.0.1/magento/ --db-host=localhost --db-name=magentodb --db-user=root --db-password= root --admin-user=admin --admin-password=admin123 --language=en_us --currency=usd --timezone=america/chicago --cleanup-database      [runtimeexception]      many arguments.   

so, decrease paramters. again same

root@vegan:/var/www/html/magento2/bin# ./magento setup:install --base-url=http://127.0.0.1/magento/ --db-host=localhost --db-name=magentodb --db-user=root --db-password= root       [runtimeexception]      many arguments.  

i can see

http://localhost/magento2/setup/#/landing-install

page here. think there no errors. can run setup stucks @ %66 %67. yesterday icompleted not adding shoopping card, today deleted php 5.6 7.0 in pc , reinstalle all. now, cant install..

what can reason? downloaded magento web , extracted ww/html

directory is

/var/www/html/magento2/bin 

even errors

root@vegan:/var/www/html/magento2/bin# ./magento setup:install admin-user="root"      [runtimeexception]      many arguments.   way create user , daabase before installation      mysql -u root -p     create database magentodb;     create user magento@localhost identified 'magento';     grant privileges on magentodb.* magento@localhost;     flush privileges;     exit     mysql bu     11-  service apache2 restart     12-  service mysql restart 

i deleted php, reinstalled php5.6 , worked.