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When authoring web pages and programming in HTML, you might have noticed that no matter how many spaces you put between words or text elements they get collapsed to a single space when rendering the page. When writing text or sentences in most text processing software, you will be able to hit the space bar multiple times and add multiple…
You might already know that in Linux a directory have to be empty before it can be deleted. Well…not quite true, you can force delete the directories. What if you want to remove only empty directories recursively from the folder structure? There are a couple of different ways to do this. We will see some of the options from the…
Defining the size of text in different contexts is important when designing and developing webpages. In HTML, there are primarily two different ways of specifying the font size or size of text. One is using the font tag and the other is using cascading style sheets or CSS. According to the latest W3C recommendations, the best way to change the…
Linux has several different utilities that can perform string or text manipulation. Depending on your environment and the tools that are available, you should be able to easily parse, find and replace any string in a text file. Almost every single text editor comes with a find and replace feature with a UI, so we are going to only explore…
ssh or secure shell is a network protocol that allows you to perform various network services remotely and securely over an unsecured network. There are several different operations that can be performed using the ssh protocol. The most common are probably logging in or connecting to a remote machine and transferring files over the network to a remote machine. In…
The vi or vim editor is the popular and feature rich editor for editing text files in Linux. You can go to a particular line in the editor in several ways depending on where you are accessing it from. from the command line If you are opening a file from the command line, and you want the cursor at a…
If you work with computers of any kind, sooner or later you will want to copy files between folders. Often times you want to copy files between machines or computers over a network as well. Secure Copy or scp allows you to copy files between hosts on a network. The files are copied over ssh or secure shell which allows…
If you use vi or vim editor to edit text files, then you should be aware of the different text manipulation commands that exist in the editor. One of the common actions you will perform is the deletion of a single line or the deletion of multiple lines of text from with in the editor. Let’s see the various ways…
There are several different ways to view text files in Linux. You can use a text editor such as vi or gedit. You can also use an utility like more or less that will print out the complete content of the file. tail is yet another utility that will allow you to view the contents of a file. However, there…
It is easy enough to insert or draw a horizontal line in html. But how do you draw a vertical line in html? Unlike for the horizontal line, there is no single tag in html that will draw the vertical line. But that does not mean it is impossible to do so. Using CSS One way to do this is…
In Linux, tar and gzip is the widely used archiving and compressing file format. Another most widely file compression file format is zip, which is more popular in other operating systems such as Windows. However it does not mean that Linux does not support the zip format. There are utilities in Linux that you can use to uncompress zip files….
If you have done programming in any language, you must realize how important comments are in understanding code. Of course, you need to write good comments and maintain them regularly. When done correctly, it is an invaluable tool in understanding code logic in long running code bases. HTML or Hyper Text Meta Language is no different. HTML is not a…
