yes, compressed files can still be infected with viruses or malware, especially if they are downloaded from untrusted sources. it is important to always scan compressed files with antivirus software before extracting them, and to only download files from trusted sources. while every effort has ...
There are several steps you can take to ensure your compressed files perform optimally: Choose the right file format for the job, since not all compressed formats are created equal; select an algorithm that meets your goals (lossless/lossy, speed/size); lower your bit rate if applicable; use...
as in the example, denotes a regular file, meaning that there’s nothing special about the file. This is by far the most common kind of file. Directories are also common and are indicated by a d in the file type slot. (3.1 Device Files lists the remaining file types.) ...
These options have been carefully created to optimize PDF files as much as possible. This means that your files are made smaller, without compromising on the visual quality of the text, or image resolution. Check out this guide: Depending on which level of compression you choose to fit your ...
Many beginners find it confusing that archives are normally found compressed, with filenames ending in .tar.gz. To unpack a compressed archive, work from the right side to the left; get rid of the .gz first and then worry about the .tar. For example, these two commands decompress and ...
Large files make it hard for websites and devices to run. Millions of businesses and consumers worldwide turn to WinZip in order to obtain the tools and resources needed to ensure that the files used to run their websites and other programs are properly compressed, enabling the saving of co...
Many important parts of the system are actually shell scripts—text files that contain a sequence of shell commands. If you’ve worked with MS-DOS previously, you can think of shell scripts as very powerful .BAT files. Because they’re important, Chapter 11 is devoted entirely to shell scrip...
using a table-based lookup algorithm invented by Abraham Lempel, Jacob Ziv, and Terry Welch. Two commonly-used file formats in which LZV compression is used are the GIF image format served from Web sites and the TIFF image format. LZW compression is also suitable for compressing text files....
A PNG image won’t lose any of its data when it’s compressed, which makes it much easier to store and transfer. This is a big advantage overlossyoptions likeJPEG files, where some information disappears in the compression process.
Once you decide to organize your computer files and take stock of what you have, you need to decide what stays and what goes. While you are in the process of taking inventory, you should also take the time to back up all the files you deem important, especially any personal files. ...