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Technology posts that could include anything and everything technical
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…
The vi or vim is a console based text editor in Linux. It is probably the most useful of Linux applications, in that you can quickly view and edit the text files right at the command shell. When viewing the text files, one of the useful features is the ability to search for a word or some text in the file….
If you are a Linux power user, you are probably working a lot with command shell both the command line interface (CLI) as well as shell scripts. Linux command line provides a lot of flexibility and powerful options when working with different commands: regular expressions, wildcards, meta characters, operators, file and i/o redirection, brace expansion etc etc. We will see…
HTTP status codes are three digits numbers that are returned by a web server in response to a web request by a client. This code provides some general information about the status of the request to the client. The response may (or may not) also contain a descriptive text regarding the status of the request. The IANA (Internet Assigned Numbers…
Mozilla Firefox has several options to configure the start or homepage in the browser. The homepage button allows you to easily go to a specific webpage or URL. This is probably a website that you visit very often and is also your start page. There are a couple of different ways to set the homepage in the browser. You can…
If you spend any amount of time working on Linux environments, either as an user or as an administrator then it is inevitable that you will need to check the log files at some point. It is quite possible that the system or an application is misbehaving or is not working and the best way to fix the issue would be…
