Magento 2

Override config in env.php

https://r-martins.github.io/m1docs/guides/v2.4/config-guide/prod/config-reference-var-name.html

    'system' => [
        'stores' => [
            '<store_code>' => [
                'system' => [
                    'smtp' => [
                        'host' => 'localhost',
                        'port' => '25'
                    ]
                ],
            ]
        ],
        'default' => [
            'system' => [
                'smtp' => [
                    'host' => 'localhost',
                    'port' => '25'
                ]
            ],
            'catalog' => [
                'search' => [
                    'engine' => 'opensearch',
                    'opensearch_server_hostname' => 'opensearch',
                    'opensearch_server_port' => 9200,
                    'opensearch_index_prefix' => 'catalog'
                ]
            ],
            'web' => [
                'unsecure' => [
                    'base_url' => 'http://test/',
                    'base_link_url' => '{{unsecure_base_url}}'
                ],
                'secure' => [
                    'base_url' => 'https://test/',
                    'base_link_url' => '{{secure_base_url}}'
                ],
                'default' => [
                    'front' => 'cms'
                ],
                'cookie' => [
                    'cookie_domain' => 'test'
                ]
            ],
        ],
    ],

Setup command:

bin/magento setup:install \
--base-url=http://pub.m246.php82/ \
--backend-frontname=admin \
--db-host=maziadb \
--db-name=m246 \
--db-user=root \
--db-password=1 \
--admin-firstname=admin \
--admin-lastname=admin \
[email protected] \
--admin-user=admin \
--admin-password=admin123 \
--language=en_US \
--currency=USD \
--timezone=America/Chicago \
--use-rewrites=1 \
--search-engine=opensearch \
--opensearch-host=opensearch \
--opensearch-port=9200 \
--opensearch-index-prefix=m246 \
--opensearch-timeout=15

Disable 2fa module

php bin/magento module:disable Magento_TwoFactorAuth Magento_AdminAdobeImsTwoFactorAuth

Generate URN

php bin/magento dev:urn-catalog:generate --ide PHPSTORM .idea/misc.xml

1-line logger

\Magento\Framework\App\ObjectManager::getInstance()->get(\Psr\Log\LoggerInterface::class)->debug('message');

logger with custom file

https://magento.stackexchange.com/questions/75935/how-to-create-custom-log-file-in-magento-2
v2.4.3 or newer

$writer = new \Zend_Log_Writer_Stream(BP . '/var/log/custom.log');
$logger = new \Zend_Log();
$logger->addWriter($writer);
$logger->info('Custom message');

v2.4.2

$writer = new \Laminas\Log\Writer\Stream(BP . '/var/log/custom.log');
$logger = new  \Laminas\Log\Logger();
$logger->addWriter($writer);
$logger->info('Custom message');

v2.4.1 or older

$writer = new \Zend\Log\Writer\Stream(BP . '/var/log/custom.log');
$logger = new \Zend\Log\Logger();
$logger->addWriter($writer);
$logger->info('Custom message');

logger with custom file by di.xml

    <virtualType name="Vendor\Module\Logger\Handler" type="Magento\Framework\Logger\Handler\Base">
        <arguments>
            <argument name="filesystem" xsi:type="object">Magento\Framework\Filesystem\Driver\File</argument>
            <argument name="fileName" xsi:type="string">var/log/filename.log</argument>
        </arguments>
    </virtualType>
    <virtualType name="Vendor\Module\Logger\Logger" type="Magento\Framework\Logger\Monolog">
        <arguments>
            <argument name="handlers" xsi:type="array">
                <item name="system" xsi:type="object">Vendor\Module\Logger\Handler</item>
            </argument>
        </arguments>
    </virtualType>
    <type name="Vendor\Module\Model\YourClass">
        <arguments>
            <argument name="logger" xsi:type="object">Vendor\Module\Logger\Logger</argument>
        </arguments>
    </type>

Backup db

https://gitlab.com/chung1905/pysqldump/

Or

#!/bin/bash

NO_DATA_TABLES="report_viewed_product_index
report_event
report_viewed_product_aggregated_daily
report_viewed_product_aggregated_monthly
report_viewed_product_aggregated_yearly
report_compared_product_index
report_event_types"

BACKUP_FILE='./backup/backup.sql'
DB='db_name'
IGNORE_TABLE_CMD='mysqldump --single-transaction'
NO_DATA_CMD="mysqldump --no-data --single-transaction $DB"

for table in $NO_DATA_TABLES
do
        IGNORE_TABLE_CMD="$IGNORE_TABLE_CMD --ignore-table=$DB.$table "
done

IGNORE_TABLE_CMD="$IGNORE_TABLE_CMD $DB"

for table in $NO_DATA_TABLES
do
        NO_DATA_CMD="$NO_DATA_CMD $table"
done

$IGNORE_TABLE_CMD | sed -r 's=/\*!500.. DEFINER[^*]+\*/==g' > $BACKUP_FILE
$NO_DATA_CMD | sed -r 's=/\*!500.. DEFINER[^*]+\*/==g' >> $BACKUP_FILE

pigz -f $BACKUP_FILE

Magento 1

1-line logger

Mage::log($select->__toString(), Zend_Log::DEBUG, 'task807.log', 1);