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Technology posts that could include anything and everything technical
If you use vi or vim editor to edit text files, then you should know different text manipulation commands that exist in the editor. One of the common actions you will perform is the deletion of a line or multiple lines from with in the editor. Let’s see the various ways you can delete a line in the vim editor….
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…
If have been bash programming, then you must have seen brace expansion syntax being used in shell commands. The main purpose of brace expansion is automatically generate a set of strings (or numbers) that follows a general pattern. The pattern is enclosed with curly braces: ‘{‘ and ‘}’. This leads it to be commonly referred to as the brace expansion…
If you have done any programming in any language, you should be familiar with loops. Almost all computer programming languages have some version of a loop statement. It is a language construct that allows you to execute a specific piece of code repeatedly, often with different set of data. In this post, we will talk specifically about the for loop…
The Linux command to delete a folder or directory is the same as the one to delete a file. You can use the rm command to delete both files and folders. Deleting an empty directory is easy enough but if you try to remove a directory that has files in them, you will get an error. deleting an empty folder…
Many times you would want to forward your root domain to a subdomain of your website. The root domain which is also referred to as the naked domain or the bare domain is the website url that does not have an entry before the site name. For example, the URL http://lostsaloon.com or http://google.com are examples where it refers to a…
SetUID stands for set user id on execution. The Linux systems allow for elevated or escalated privileges when executing files. This is a special type of permission that can be set on the file in addition to the usual set of file permissions. When the setuid is set on an executable file, the users can execute that file with the…
Syntax Highlighting is a feature where the readability of the displayed text is enhanced by showing certain words, phrases or keywords in differing colors or fonts. This is especially useful when viewing source code of various programming, scripting or markup languages. In fact any text with an associated grammar can have syntax highlighting. Integrated Development Environments (IDE) or Programming Editors…
When you are writing shell scripts or typing out commands in bash, you might have noticed that you can use either the single quotes (‘) or the double quotes (“) with most commands. This is true not just with scripts but with all bash commands as well. But there is a difference between the two types of quotes, single vs…
