today's howtos
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LFCA: Learn Binary and Decimal Numbers in Network – Part 10
In Part 9 of the LFCA series, we covered the basics of IP addressing. To better understand IP addressing, we need to pay more attention to these two types of IP address representation – binary and decimal-dotted quad notation. As mentioned earlier, an IP address is a 32-bit binary number that is usually represented in decimal format for ease of readability.
The binary format uses only the digits 1 and 0. This is the format that your computer comprehends and through which data is sent across the network.
However, to make the address human-readable. It is conveyed in a dotted-decimal format which the computer later converts into binary format. As we stated earlier, an IP address is made up of 4 octets. Let’s dissect the IP address 192.168.1.5.
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6 advanced tcpdump formatting options
The final article in this three-part tcpdump series covers six more tcpdump packet capturing trick options.
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5 Funny Commands to use in Linux and Terminal
Not everything in Linux is serious, fortunately we can find fun programs created for the sole purpose of entertaining us. You may be wondering why? Well, because we are human and at the end of the day we need a little variety, laughter and maybe a drink on the train. And yes, speaking of the train, let’s introduce you to the first fun command-type application in Linux.
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Ubuntu Blog: Should you ever reinstall your Linux box? If so, how?
Broadly speaking, the Linux community can be divided into two camps – those who upgrade their operating systems in-vivo, whenever there is an option to do so in their distro of choice, and those who install from scratch. As it happens, the former group also tends to rarely reinstall their system when problems occur, while the latter more gladly jump at the opportunity to wipe the slate clean and start fresh. So if asked, who should you listen to?
The question of system management in Linux is a complex one, with as wide a range of answers as there are distributions. In this blog post, we discuss the concept of reinstall, and whether it’s necessary. Then, we address several other closely related ideas like system imaging, full disk encryption, and data backups.
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System problems are an unfortunate side effect of software usage. With some luck and operational discipline, you can avoid most of them. When they do happen, you want to know what to do. Reinstalling your Linux system is always an option, but it’s usually not necessary, even for various difficult, complex problems.
Even if you do decide to reinstall, you should consider using a live session to inspect the system or perform any last-minute backups, have a solid backup procedure in place regardless, and weigh the benefits of encryption against your day-to-day needs and risks. System images can also help you reduce the hassle of getting back to speed when you do decide to “reset” your distro. That’s all we have on Linux reinstallations. If you have any comments or suggestions, please join our forum, and let us know your thoughts.
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