Dev {Tricks}


You are here: Home / Archives for How to

by

100% Disk Usage Solved with 10 Tips for Windows 10

Many of windows 10 users are suffering from 100% Disk Usages. To give it a solution, you can try following 10 TIPs!

  1. Run Disk Check
  2. Reset Virtual Memory
  3. Disable Windows Search
  4. Disable Superfetch
  5. Disable DiagTrak
  6. High Performance Mode
  7. Disable Chrome Prefetch
  8. Update Windows
  9. PCI – Express Bug
  10. SATA Drivers

 

by

How to increase computer Virtual Memory? Windows 10.

To reset virtual memory of your computer, follow the steps below:

  • Search Control Panel
  • Open “Control Panel” app
  • Click on “System and Security”
  • Then click on System
  • This will open Device and Windows specifications. You will find “Advanced system settings” here and click on it.
  • A popup window will appear. Click on “Settings” under Performance.
  • Another popup window will appear. Click on “Advanced” tab. Than click “Change” under Virtual memory.
  • Uncheck “Automatically manage paging file size for all drives” and set Custom size.
  • The custom Initial and Maximum size will be 1.5 times of your system memory.
  • Click “Set” and then “OK”
  • The changes you have made require you to restart your computer before they can take effect.

That’s all!

by

How to Stop XML-RPC Attack in WordPress

WordPress utilizes XML-RPC to remotely execute functions for example JetPack, WordPress mobile application etc.  But XMLRPC Attack made web server jam. In HTTP access log, we saw a lot of requests like this:

61.135.232.103 - - [11/Sep/2020:10:27:20 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
91.132.142.57 - - [11/Sep/2020:10:39:03 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
5.33.187.36 - - [11/Sep/2020:10:43:28 -0500] "POST /xmlrpc.php HTTP/1.1" 200 401 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"

You will also get “Error connecting to database” message when your WordPress site is down.

Solutions

We can secure server from XMLRPC attacks in several ways

  • We can add a HTTP directive to httpd.conf or .htaccess for denying all requests on /xmlrpc.php. 
    <files xmlrpc.php>
  Order allow,deny
  Deny from all
</files>

    If don’t have httpd.conf or .htaccess, we can simply rename the filename.

    • Where is httpd.conf? 
      /etc/httpd/conf/httpd.conf
    • DirectAdmin: File Editor
    • Webmin: Others > File Manager
  • Installing the Jetpack Plugin can block the XML-RPC requests with its “Protect” function.

 

 

 

 

by

PopUp on WordPress with plugin

Generally we use two types of popup.

  1. On page landing popup
  2. On click popup

There are many plugins those can be used for these purpose. But you can check below two plugins.

For on page landing popup, we can use “Popup Builder” plugin. This plugin can also be connected with “Contact Form 7”.

For on click popup, we can use “Popup Maker“. This plugin can also be connected with “Contact Form 7”.

 

by

how to know file size in linux command

ls command for files
du command for directories

Checking File Size

ls -l filename #Displays Size of the specified file
ls -l * #Displays Size of All the files in the current directory
ls -al * #Displays Size of All the files including hidden files in the current directory
ls -al dir/ #Displays Size of All the files including hidden files in the ‘dir’ directory

Checking Directory size

du -sh directory_name #Gives you the summarized(-s) size of the directory in human readable(-h) format
du -bsh * #Gives you the apparent(-b) summarized(-s) size of all the files and directories in the current directory in human readable(-h) format

For more information see man ls and man du