Given an unsigned integer, reverse all bits of it and return the number with reversed bits.

Input : n = 1

Output : 2147483648  

Explanation : On a machine with size of unsigned bit as 32. Reverse of 0….001 is 100….0.

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Cat (concatenate) command is very frequently used in Linux. It reads data from the file and gives its content as output. It helps us to create, view, and concatenate files. So let us see some frequently used cat commands.

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Ccrypt is a command line tool for encryption and decryption of data. Ccrypt is based on the Rijndael cipher, the same cipher used in the AES standard. On the other hand, in the AES standard, a 128-bit block size is used, whereas ccrypt uses a 256-bit block size. Ccrypt commonly uses the .cpt file extension for encrypted.

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chpasswd command is used to change password although passwd command can also do same. But it changes the password of one user at a time so for multiple users chpasswd is used. Below figure shows the use of passwd command. Using passwd we are changing the password of the guest user. Here first you have to enter the password of the currently signed user and then you change the password of any other user. One must have administrator privileges.

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Linux provides Zip command to work with a file like compressing the file and decompressing with a password. It’s not come with built-in you need to install from an external source. The Zip command has two different utility(zip and unzip). zip is used for compressing the file and unzip is used for decompressing the file.

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Excel sheets are the most important method to share data with others. Like other Microsoft Office products, it is also widely used by many users throughout the globe. MS Word and MS PowerPoint are used by a lot of users in the world. Along with that, Excel sheets are also used for making tables.

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I’m using Linux I went with a quick search and came across fcrackzip. This is a free program that allows for both dictionary and brute force cracking of zip file passwords. It is not difficult to use and offers a wide range of options. Let’s make a zip file then we will copy-paste it into Linux after that we will try to break this password by fcrackzip. I created a zip file. This zip file’s password is 12345678.

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Microsoft Word is a software tool that allows us to create document files like articles, office letters, project files, and many more in a very simplest and easy manner. MS Word makes our document more attractive as compared to paper or file work by providing different features like it has different sizes of pages, fonts, colors, design, bullets, tables, charts, page border/number, and many more.

It also provides various features like editing, texting, formatting, graphics designs, fonts color, and styles, inserting images, videos, printing documents, etc. This MS Word software saves our article/letters in a form of a document and saves it on the computer forever. Whenever it is required it can be shared or can access the document.

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Animations in MS PowerPoint are the most interactive way to present the data to someone. Nowadays, animations keep people engaged with the concept which they are explaining using the help of PowerPoint. PowerPoint animations play a vital role to understand the most complicated topics very easily. PowerPoint is commonly used by people in business and also the students to create the presentation.

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HTML is known as HyperText Markup Language. It is a combination of both Hypertext and Markup language. Here hypertext means the link between the web pages and markup is used to define the text document within tag which defines the structure of web pages. It acts as a skeleton of a web page and without HTML it would be very difficult or impossible to build a webpage. It is used by all the browsers and used to manipulate text, images, and other content, in order to display it in the required format.

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