This is CentOS 8 Stream installation guide, step-by-step walkthrough with screenshots.
The CentOS 8 is available for the following architectures
Intel/AMD 64-bit
IBM Power little endian
ARM 64-bit
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On this guide I use Anaconda Graphical Installer and CentOS 8 Stream DVD ISO. You can alternatively use Stream Boot ISO or 8.0.1905 medias.
1. Before CentOS 8 Installation
1.1 Download CentOS 8 DVD ISO Image
Check closest CentOS mirror and download CentOS...
Simple PHP function that formats the bytes to the desired form. Possible unit options are:
Byte (B)
Kilobyte (KB)
Megabyte (MB)
Gigabyte (GB)
Terabyte (TB)
Petabyte (PB)
Exabyte (EB)
Zettabyte (ZB)
Yottabyte (YB)
Function takes three parameter: (bytes mandatory, unit optional, decimals optional)
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PHP byteFormat function for formatting bytes
<?php
function byteFormat($bytes, $unit = "", $decimals = 2) {
$units = array('B' =>...
I would like to welcome all new and old visitors to If Not True False Then site Facebook pages. Hopefully, this new Facebook page also helps to follow new blog posts. Of course, there is also other ways to follow this blog posts, simply using RSS Feed and Twitter.
So following step is check out If Not True Then False Facebook page and like it. :)
Like If Not True Then False on Facebook:
This new design (using Arras Theme) has just been published and will still develop, so any comments and opinions are very welcome.
In my opinion, the new layout is much lighter and clearer. Also blog's content is intended to bring out clearer for blog readers and users.
Please leave comment and tell your opinion!
Old layout screenshot:
New layout screenshot:
Here is a list of the best Google Chrome Search Engine Optimization (SEO) extensions (plugins).
Search Engine Optimization (SEO) Extensions
Chrome SEO
The Google Chrome SEO Extension. Make your SEO tasks easier with Chrome SEO Tools, includes 'all' the stats and data you need.
Install Extension
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I before post 'Twitter Hacked by Iranian Cyber Army', but actually just Twitter DNS records was hacked. I think even twitter.com server headers and tracepath to servers simply prove this, because they are completely different normally when hacked.
Hacked twitter.com headers:
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Sometimes need to delete files whose contents should disappear absolutely, completely and safely. Linux command rm just remove file and it is still possible to dig out from the disk. Fortunately for Linux can be found in shred program that removes the files permanently. Shred command is easy and quickly to use cases when files need to deleted forever.
Shred command usage
Create test file:
echo "testing testing" > /tmp/test.txt
Delete file with shred command:
shred -v -n 25 -u...
Twitter site is hacked by Iranian Cyber Army. Here is some screenshots and full info about page.
Screenshots
Server info and full html content
lynx -mime_header http://twitter.com
HTTP/1.1 200 OK
Date: Fri, 18 Dec 2009 06:42:08 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 mod_auth_passthrough/2.1 FrontPage/5.0.2.2635
Last-Modified: Fri, 18 Dec 2009 06:21:13 GMT
ETag: "90c06a-717-47afabf13c840"
Accept-Ranges: bytes
Content-Length:...