A little something about everything

internet marketing and website development made simple..

Installing webmin on CentOS7 using the CentOS-7-x86_64-Minimal-1511.iso image

Installing webmin on CentOS7

  • Run the following commands:
    # yum update
    Is this ok [y/d/N]: y
    Is this ok [y/d/N]: y
    # cat > /etc/yum.repos.d/webmin.repo << EOF
  • Edit the file as follows:
    [Webmin]
    name=Webmin Distribution Neutral
    #baseurl=http://download.webmin.com/download/yum
    mirrorlist=http://download.webmin.com/download/yum/mirrorlist
    enabled=1
    EOF
  • Now run
    # rpm --import http://www.webmin.com/jcameron-key.asc
  • Install webmin
    # yum install webmin
    Is this ok [y/d/N]: y
  • Now open port 10000 to access webmin, to open for all IP's for example
    # iptables -I INPUT -p tcp --dport 10000 -j ACCEPT
Completed.

How to center an element (div, span, etc) using css3

In order to target a div you can do so by id or by class, for example

<div id="centerme" class="centerit">some content</div>

here is the css:

#centerme {
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
/* in some cases you may want to give it a width and height first */
height:100%;
max-height: 10rem;
width: 100%;
max-height: 20rem;
}
/* another option only vertical via class rather than id */
.centerit {
top: 50%;
transform: translateY(-50%);
}
/* or only horizontal  */
.centerit {
left: 50%;
transform: translateX(-50%);
}

That's it!

simple Show/Hide content or multiple Div's using only javascript and CSS

Simple script to show and hide multiple div's

Example:

Spotlight 1, Spotlight 2, Spotlight 3

Spotlight 1 content

Spotlight 2 content

Spotlight 3 content

The code:
<script language="javascript">
function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}
function ShowHide(bioname) {
	var bios = getElementsByClass('bio');
	for(i=0; i<bios.length; i++)
		bios[i].style.display = 'none';
	document.getElementById(bioname).style.display='block';
}
</script>
<style>
#bio2,#bio3 {
	display: none;
}
</style>
<p>Simple script to show and hide multiple div's</p><p>Example:</p>
<p>
<a href="#" onclick="ShowHide('bio1');">Spotlight 1</a>,
<a href="#" onclick="ShowHide('bio2');">Spotlight 2</a>,
<a href="#" onclick="ShowHide('bio3');">Spotlight 3</a></p>
<div id="bio1" class="bio" style="width:400px;margin:10px;padding:10px;border:1px solid #000;box-shadow: 0 0 5px #000;"><h4 style="color:#000;">Spotlight 1 content</h4> </div> <div id="bio2" class="bio" style="width:400px;margin:10px;padding:10px;border:1px solid #f00;box-shadow: 0 0 5px #f00;"><h4 style="color:#f00;">Spotlight 2 content</h4> </div> <div id="bio3" class="bio" style="width:400px;margin:10px;padding:10px;border:1px solid #0f0;box-shadow: 0 0 5px #0f0;"><h4 style="color:#0f0;">Spotlight 3 content</h4> </div>

Picking a Domain, with SEO in mind.

When starting a business or new website project the first step is always picking a relevant yet easy to remember domain name that is easy also good for marketing. One thing that some do not consider is how the search engines delegate certain domain extensions or Top Level Domains(TLDs).

Everyone knows .com, .net, .org and .edu have been around since the start and are widely used, unfortunately it is also hard to find a good domain that is not being help by domain campers, investors or spammers. In order to deal with this the registry has released a number of domains over the years as well as country specific TLDs. However, many of these countries have opened their own TLD for public use, whether for profit or publicity there is quite the list. Some such as .ws and.co have become very popular leaving search giants in the position to treat them like standard TLDs. Here is a list of domains treated like standard TLDs rather than country or regional specific TLDs for SEO purposes by google.

Country domains treated as standard TLDs

  • .ad
  • .as
  • .bz
  • .cc
  • .cd
  • .co
  • .dj
  • .fm
  • .io
  • .la
  • .me
  • .ms
  • .nu
  • .sc
  • .sr
  • .su
  • .tv
  • .tk
  • .ws
Regional domains treated as standard TLDs

  • .eu
  • .asia
It is important to choose a domain treated as a standard domain or all searches will be locked to the country specific search results.

Performance, Private Memory Limit and Virtual Memory Limit

Private memory limit uses your system RAM, where the Virtual Memory limit will use Disk drive space. In most cases it is best to only set a private memory limit to prevent degradation to system performance if an application starts to use excessive amount of memory. Many .Net application will use large amount of virtual memory(Drive Space).