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rsync --rsync-path 'sudo rsync' -v -e "ssh -i /path/to/private_key" /local/path/to/file user@host:/remote_path_dest

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# Local WordPress installation with persistent data.
# Quickly bring up containers to test WordPress things. The following folders are required in the root of the project as they are mounted as volumes:
# - site
# - database

version: '3.1'

services:

  site:

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docker rm $(docker ps -a -f status=exited -q)

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docker rmi $(docker images -f "dangling=true" -q)

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// first
docker exec -it {mysql_container_id} bash

// then
mysql -u {username} -h {mysql_container_name} -p

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version: '3.1'

services:

  app:
    image: php:7.2.2-apache-stretch
    volumes:
      - ./app:/var/www/html
    ports:
      - 8080:80

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docker exec -it {containerID} bash

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<?php
$log_file = "/internal/path/to/file/log.txt";
$fh = fopen($log_file, "a"); // or die("Could not open log file.");
fwrite($fh, date("d-m-Y H:i:s")." - some data \n"); // or die("Could not write file!");
fclose($fh);	
?>

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# protect .htaccess
<files .htaccess>
    order allow,deny
    deny from all
</files>
# protect wpconfig.php
<files wp-config.php>
    order allow,deny
    deny from all
</files>

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<?php
$var_cleaned = preg_replace("|[^0-9a-zA-Z -]|", '', $_POST['var']);
?>