Dev {Tricks}

You are here: Home / Archives for How to

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

by

How to redirect using .htaccess file

Redirect entire website to any other domain

301 (Permanent) Redirection

Redirect 301 / http://hostbriz.com/

302 (Temporary) Redirection

Redirect 302 / http://hostbriz.com/

Redirect file to a specific file/domain/directory/folder

Redirect file to domain

Redirect /index.html https://healthproclub.com/

Redirect old file path to new file path

Redirect /olddirectory/oldfile.html http://example.com/newdirectory/newfile.html

Redirect /old to /new directory

RewriteRule ^old/(.*)$ /new/$1 [R=301,NC,L]

Set the default index extension

DirectoryIndex index.html

Set redirect except condition RewriteCond

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{REQUEST_URI} !^/index.php
RewriteCond %{REQUEST_URI} !^/fss
RewriteRule (.*) https://journals.healthproclub.com/$1 [R=301,L]

Redirect 404 Error pages to homepage

ErrorDocument 404 https://bdhostit.com/

Redirect non-existing page(s) to index.php

Options +SymLinksIfOwnerMatch
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]

Redirect everything to https://hostbriz.com

RewriteEngine on
RewriteRule ^(.*)$ https://hostbriz.com/$1 [R=301,L]

Redirect a directory to

RewriteRule ^journal/(.*)$ https://hostbriz.com/$1 [R=301,NC,L]

Redirect all sub domains to main domain with www

RewriteCond %{HTTP_HOST} ^[^.]+\.[^.]+$
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Redirect all sub domains to main domain without www

RewriteCond %{HTTP_HOST} ^[^.]+\.[^.]+$
RewriteCond %{HTTPS}s ^on(s)|
RewriteRule ^ http%1://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Redirect www, non-www, http to https without www

RewriteEngine On
RewriteCond %{HTTPS} off 
RewriteCond %{HTTP_HOST} ^(?:www\.)?(.*)$ [NC]
RewriteRule (.*) https://%1%{REQUEST_URI} [L,R=301]

 

by Leave a Comment

Website is undergoing some maintenance and will be back soon.

Please note that our website is undergoing some technical maintenance. We’ll be back soon.

We thank you for your patience and hope to see you soon!

<html>
<head>

</head>
<body cz-shortcut-listen="true">
  <div style="position:absolute;left:0;right:0;top:20%;bottom:0;height: 100vh;text-align: center;">
  <h1>Website is undergoing some maintenance and will be back soon.</h1>
    Please note that our website is undergoing some technical maintenance. We’ll be back soon. 
    We thank you for your patience and hope to see you soon!
  </div>
</body>
</html>

by Leave a Comment

How to change UID and GID? chown

UID = User ID
GID = Group ID

We can change UID and GID with command ‘chown’ login with SSH.

chown -R newuserID:newgroupID folder_name

For example, to change myfolder UID and GID

chown -R bdhostit:bdhostit myfolder

or to change maildir UID and GID. Here, “bdhostit” is account’s username.

chown -R bdhostit:mail /home/bdhostit/domains/Maildir