Error: Too many arguments, expected arguments command

[wasimagile]

1. I faced the same error message due to one space in parameter. 

2. Probably, you faced this issue due to 127.0.0.1 as bas-url. Magento 2 does not work on the top-level domains like localhost or 127.0.0.1. What happen if you would use any vhost?

[ivoets]

This can be a problem with the SSH commandline.

Check if the command is correctly parsed by PHP.
Check if all quotes are correctly.
If you copy-past it from a website, the " " signs might be wrong.  Replace them on the command line.   Also check this with single quotes  ' '

Also check it with  single or double - (minus) signs.

[mohajibrah909b]

Remove backslashes \ from the Magento install command line, for example I successfully ran the following command as root ....

./magento setup:install --base-url=http://localhost/magento2/ --db-host=localhost --db-name=mymagentodb --db-user=magentoadmin --db-password=magentopassword --admin-firstname=Magento --admin-lastname=Admin --admin-email=admin@example.com --admin-user=admin --admin-password=MySecretPassword --language=en_US --currency=CAD --timezone=America/Toronto --use-rewrites=1 --search-engine=elasticsearch7 --elasticsearch-host=servername.example.com --elasticsearch-port=9200

[david_bayley]

Doubt this is the issue, however, the minimum requirements for PHP is 7.4. Might be worth upgrading and trying again. 

[david_bayley]

'You can run the installer multiple times with different options to complete installation'

I managed to resolve this issue by running the cmds in stages, this allowed me to identify the problematic cmd. 

My issue was resolved by putting my passwords in single quotes: '<myPassword>' (don't think it liked the '!' character. 

[blue_hat]

Thank you for your advice. Removing the backslashes was the problem for me with this error: too many arguments expected arguments command.

[ErikCarlseen]

The solution was easy for me on CentOS 8 / PHP 7.4.1: Get rid of the equals signs between the parameter names and parameter values. As soon as I did this everything worked fine.

php 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 "martin" \
                          --admin-lastname "kaltenboeck" 
                          --admin-user "admin" \
                          --admin-password "martin99" \
                          --admin-email "office@km-tools.at" \
                          -–language "de_AT" \
                          --currency "EUR" \
                          --timezone "Europe/Vienna" \
                          --cleanup-database \
                          --session-save "db" \
                          --use-rewrites "1"

[csabatothuefac]

The solution was similar for me. I copied the command from a PDF doc provided by a local support company. Turned out the dashes in the PDF weren't dashes, just looked like.

I had to hunt them by issuing:

echo '<original magento command>' | tr -d -

All what's left and seemd like a dash, was the problem causing character in question.

[bhuvaneshw2c62]

I got this error because of a space in the command. 

[sultan]

this is the good way to set values ======>     --language=en_US 

not like this --language="en_US"