Determine hardware resources for devices

Python has always touted itself as a "batteries included" language; its standard library contains lots of useful modules, often more than enough to solve many types of problems quickly. To understand what OSS is, you must first understand how source code is used to create programs. In all cases, bash …

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The ultimate guide to unicode_start

You can control everything from the command line. There is yet one other weakness: if a computer switches operating systems later, the long uptime is credited to the new OS. Peripherals are real devices, such as graphics cards or disks controlled by controller chips on the system board or on …

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Generating use cases for Haskell

There are various other shell interpreters available, such as Korn shell, C shell and more. The first method is most often the easiest, as long as your system UEFI boot manager allows you to disable the secure boot feature. For the operating system to accomplish this, it must contain the …

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Instance names should not be specified when using hwclock

For those companies, Linux supports most UNIX commands and standards, which makes transitioning to Linux very easy because the company likely would not need to pur- chase additional software or retrain staff. Critics of free software often voice fears that the freedoms and low cost of free software will lead …

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Can you install TopologiLinux on the Rasberry Pi?

Linux is full of shortcuts to help make your life easier. Those programs or issues that have not yet been addressed or resolved for Linux can still reside on the original drive and remain operational as long as they are needed. Free software, as the term is usually used, and …

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Using more to view text files at the SLAX command line

There are three types of partition supported by fdisk, primary, extended and logical. The examples continue, but all hit the same chord: there is no use in preventing the spread of information. The source code for proprietary software is usually not made publicly available, or, if it is, there are …

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Is biod better on FreeBSD than Linux?

Processes are allowed to do non-blocking reads (it depends on the mode in which they opened the file or pipe) and, in this case, if there is no data to be read or if the pipe is locked, an error will be returned. When processes are deleted, as they exit …

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Getting up and running with Deepin

Sed is the Spanish word for thirst, Though you may thirst (or hunger, or whatever) for an easier way to do things, its name did not derive from there. As of April 2008, Linux had fewer than 100 known viruses, whereas Windows had more than 1,000,000 known viruses …

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Redirecting output with Freesco

Processes are free to use a FIFO so long as they have appropriate access rights to it. Most people believe it is wrong to steal, and therefore, won't rob a wallet. Today open source software has become critical for almost every organization. The access file logs every visit to your …

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How to get more from host

The LSB is a joint project of several Linux vendors under the auspices of the Linux Foundation (formerly the Free Standards Group). A filesystem is a collection of files and directories in a formal and valid hierarchy. Commercial programming packages, like commercial operating systems, can cost a great deal of …

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What's your favourite Instant messenger

The IP protocol is a transport layer that is used by other protocols to carry their data. One interesting feature it has is that every instruction is conditional. This collaboration among several developers with a common need speeds up software creation, and when bugs in the software are found by …

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Boost your mastery of bzless with these tips

The IP protocol layer itself uses many different physical media to transport IP packets to other IP hosts. If you look at the output of lsmod, you will see that each module has a count associated with it. Until recently, most modems were 8 or 16 bit ISA cards. While …

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Interesting apps based on make

The exact wording of a recipe as it is written by its author is protected under copyright law, but the information itself (i.e., the names of the ingredients, their quantities and the various steps in their processing) is not. Even so, if a process executes until it waits then …

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File formats and conventions

Because Linux has such a large number of contributors from across multiple decades of development, contacting each individual author and getting them to agree to a new license is virtually impossible, so that Linux remaining licensed under the GPLv2 in perpetuity is all but assured. They prefer the term open …

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Actionable tips for mastering babeltrace

federal government. A pipe (its two file data structures, its VFS inode and the shared data page) is created in one go whereas a FIFO already exists and is opened and closed by its users. Another disadvantage of Open Source is the support service. If the expiry time for an …

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Does mklost+found sometimes make you feel stupid?

If the process has not blocked the signal and is waiting but interruptible (in state Interruptible) then it is woken up by changing its state to Running and making sure that it is in the run queue. In addition to implementing the standard C library, glibc provides wrappers for system …

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A simple mistake with rwall could cause many problems

If you find a bug, report it! The format most common in Linux is called Executable and Linkable Format (ELF). But all things come to an end eventually. You would want that file access to be strictly coordinated.

How much do you know about the Linux rlogin command?

Each process …

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Configuration management under BioKnoppix

The same good practices and understanding of the underlying system inform and benefit all forms of programming. That way you can still change the GRUB 2 bootloader image without having to worry about the digitally signed shim.efi file. Because your server will be probably Linux-based as well, it will …

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Redirecting standard output on the Amigo Linux operating system

Libraries were written and ported, filesystems developed, and hardware drivers written for many popular devices. An exit status of zero indicates success. Tied closely to IoT is the drone trend, that of remotely controlled flying robots. A character device is accessed as a linear queue of bytes.

Shortcuts for nameif …

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Adventures with column and Arch

Some applications are written exclusively to higher-level abstractions. This means that you cannot DMA directly into the virtual address space of a process. Whenever you refer to a file or directory on the command line you are actually referring to a path and your path can be constructed using any …

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Is Sugar the best windows manager for Linux?

The GPL subsequently became by far the most widely used license for free software. Currently, in Distrowatch's past 6 months ranking, it sits at #3. Linux is a topic which is equally suitable for study in the classroom (such as at a university or a specialized computer school) or at …

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Getting your Office suite up and running on Linux

Different distributions have chosen varying approaches to file placement, software management, and other subtleties, in such a way that makes it almost impossible to make an applications distribution that will install and run cleanly across the Linux spectrum. For people wanting to become more than just casual users, it can …

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Linux is Case Sensitive

The U-Boot bootloader program can boot from any type of disk, and load any type of boot image. Linux can do everything NT does, usually faster, definately more stable and at a fraction of the cost. Both have similar tools for interfacing with the systems, programming tools, filesystem layouts, and …

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Getting up and running with the Raspberry Pi

The world economy will not collapse if creators of software choose to share their work with the world. When adding a user to a system you will be asked for your root i.d. In all of the cases above, the synergy created between the pairs has only gone to …

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Installing valgrind

How these modes are supported by the underlying hardware differs but generally there is a secure mechanism for getting from user mode into system mode and back again. Given that Linus was using several GNU tools (e.g., the GNU Compiler Collection, or GCC), the marriage of the GNU tools …

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Get rid of aplaymidi once and for all

It is as old as computers themselves. As the information age went on, though, corporations became progressively more obsessed with controlling the spread of knowledge. The boom in interest around the Internet of Things (IoT), the notion of a network of devices, big and small, that can "talk" to each …

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Whats the need for sendmail in this day and age?

By contrast, most software carries fine print that denies users these basic rights, leaving them susceptible to the whims of its owners and vulnerable to surveillance. There is no problem with using an older computer, for example, an elderly 500MHz Pentium PC with as few as five gigabytes of hard …

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How to get more from logout

A server is a computer with an operating system that is configured to allow other computers to connect to it from across a network. This is one of those arguments that sounds good superficially but which is not borne out by the evidence. If you plan to incorporate such software …

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Is the Linux OS suited to Mobile devices?

Initially, there is only one directory on the disk, the root directory. But note that this book does not cover the Linux programming environment -for example, there is no tutorial on make in these pages. The count is the number of kernel entities that are dependent on this module. In …

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Understanding the backup generator game

Named pipes (often called FIFOs, short for "first in, first out") are an interprocess communication (IPC) mechanism that provides a communication channel over a file descriptor, accessed via a special file. I say somewhat, because the use of sed in conjunction with pipes is somewhat more comfortable (at least to …

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How to set up the Perl environment on Ubuntu

A keyboard is an example of a character device. Not only you earn more capabilities as a developer, you also learn (sometimes the hard way) how to solve issues, monitor your machine for potential problems, configure different components and more. However, free software itself is not. The takeover of software …

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Redirecting output with Feather

Internal commands are, as you might expect, built into the shell program. In contrast, the source code for closed source operating systems is not released to the public for scrutiny, which means customers must rely on the vendor of that closed source operating system to provide secu- rity. Frequent emails …

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Answered - your most burning edquota questions

However, this is no less "programming" than anything else. On these foundationless grounds, what would be the problem with using Skype and locking not only yourself, but also all of your friends, into one company's software and protocol? It uses YUM for package management. A host wishing to know the …

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Compiling your own kernel on Fuduntu

Linux is a popular platform for everything from middleware to embedded computing and clusters, to parallel supercomputers and gadgets. Anyone who knows what they are doing is welcome to develop for the core, and submit patches. All controllers are different, but they usually have registers which control them. A block …

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Are you making these mistakes with for

The issues with the Diebold [2] voting systems in the US is testament [3] to the need for transparent systems that are trustworthy. In the above example, the vfat and msdos modules are both dependent on the fat module and so it has a count of 2. For Linux, a …

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Listen to the radio at the DamnSmallLinux command line

Proficiency with the proprietary Unixes has always been considered valuable, and it is well rewarded in the job market. The results of such concurrent accesses rely on the ordering of the individual operations, and are generally unpredictable. But I don't see the need for a true Linux Advocate to spotlight …

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A simple guide to cardctl

Linux systems always have a root filesystem. Linux does not. Signals have no inherent relative priorities. Even in the days before the Internet, information and so-called "intellectual property" could still be, and were, exchanged.

A simple guide to resize2fs

Each process consists of one or more threads of execution (usually …

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