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Linux

A free and open-source family of operating systems first started in 1991 and named after its creator, Linus Torvalds.

2,239 Questions

What does the cat command do in Linux?

print the contents of a text file onto the screen (like the "type" command in DOS).

I have been asked to use Riverpoint Writer for an online class. It is not compatible with Linux. What can I do?

First of all, Riverpoint Writer is simply a plugin for Microsoft that helps students create documents that comply with certain guidelines. It is possible to create documents without this plugin. Secondly, it can be used on Linux if you install Microsoft Word using Wine or CrossOver Office.

What types of firewalls are used in Linux?

Linux typically just uses one firewall and instead has many frontends to its firewall.

The firewall is netfilter, who in turn derives a lot of its rules from iptables. While you could try to use iptables directly, it's got quite a learning curve, and thus a lot of frontends are written for it to make configuring firewalls in Linux far easier: Firestarter and ufw are easier, but like with any user friendly application, they won't allow for advanced firewall usage.

Can the tee command make five copies of a file?

cat inputfile | tee file1 | tee file2 | tee file3 | tee file4 > file5

What are the differences between GRUB and LILO?

LILO (LInux LOader)

LILO stores information about the location of the kernel or other operating system on the Master Boot Record (MBR).

GNU GRUB (GRand Unified Boot loader)

GRUB has a more powerful, interactive command line interface

RUB will default to its command line interface where the user can boot the system manually.

GRUB may have difficulties booting certain hardware. LILO and GRUB do have a number of differences:

* LILO has no interactive command interface, whereas GRUB does.

* LILO does not support booting from a network, whereas GRUB does.

* LILO stores information regarding the location of the operating systems it can to load physically on the MBR. If you change your LILO config file, you have to rewrite the LILO stage one boot loader to the MBR. Compared with GRUB, this is a much more risky option since a misconfigured MBR could leave the system unbootable. With GRUB, if the configuration file is configured incorrectly, it will simply default to the GRUB command-line interface. ---A2

How much on average does Linux dedicated server hosting cost?

A Linux dedicated server usually ranges from around $30- $100 a month if you know where to get it. Most people get it online, but I'm sure you can also probably get it at a tech store.

How can you create a file named -i in Linux?

Type at a terminal prompt: touch filename
Type ls
The new file, filename, will appear in the list of directories.

Typing touch -i (as in your question) will fail with the error message touch: invalid option

Is it possible to use a USB memory stick as extra RAM when running Linux on the PS3?

No. All RAM has to run at the same speed. The USB bus is much slower than the memory bus inside.

Which Linux distribution was recently acquired by the networking software company Novell?

SUSE. Although you have a really funny definition of "recent." The acquisition happened back in 2004.

What is Linux?

Linux and UNIX both are operating systems written in C and Assembly languages. UNIX is a primary operating system introduced in the year 1970 by Ken Thompson and others, while it is a multitasking and multiuser operating system. UNIX being a proprietary networking OS, its cost is high for a mainframe system. The end-users of UNIX are not authorised to change the kernel in any way as it results in the violation of the licence in the terms.

Later in the year 1991, a Finnish student named Linus Torvalds introduced the initial Linux kernel, which meant a clone of the UNIX. Linux is an open-source operating system and free for anyone to use and modify the code. Nowadays Linux OS is widely used in day to day life like Supercomputers, desktops, smartphones, web server, home appliances, washing machines, refrigerators, cars, modems etc.

Operating system: Each time when we turn on your computer, we can see and perform different activities on the system like write, read, browse the internet and watching a video. Well, all these activities are performed by an operating system or kernel. A kernel is a program which is the heart of any operating system, used to communicate between hardware and software. So, to work on the computer we need an operating system.

Nowadays Linux is in great demand and popularly used in everywhere. Linux is an open-source operating system which is freely downloaded and distributed over the internet. With time, Linux became an important backbone for an operating system like Knoppix, Debian, Ubuntu, and Fedora etc.

source: ITEducationalExperts

What machines run Linux?

Thousands of machines run or are capable of running Linux. It can be run on most home desktops, servers, cellphones, PDAs, DVRs, and video game consoles.

Where can one find more information about Linux data Replication?

You can find more information about Linux data replication on the cisco support forums and on the couchbase website. Alternatively you can check the linux-mag and howtoforge website for more information.

What is a live system Linux?

A live system lets the operating system run directly off removable media such as a CD or USB Stick. This is common practice for most Linux distributions installation media

Will Linux become a serious competitor to windows?

Linux already is a serious competitor to Windows, especially in markets outside of the desktop.

Linux fully dominates over Windows on servers, mobile, routers, embedded, and supercomputing markets. Some are even believing Linux is fast becoming the industry standard operating system in these markets because of how readily it can be made to work.

On the desktop, Linux is alsoa threat to Windows market share, by Microsoft's own admission. Look up the Halloween Documents, which are a series of leaked memos by someone high up in Microsoft addressing Linux as Microsoft's largest credible threat.

Why is the linux file system refered to as hierarchical?

Because the person who named it was illiterate. Suffix "-al" turns a noun into an adjective (accidental; seasonal). Since "hierarchic" is already an adjective, the "-al" suffix is ungrammatical.

Why is the ext4 file system used in Linux?

It's a filesystem that works best in the average-use case for home users or small-business workstations. Other filesystems typically have features that the average user may not really need and are more suited for enterprise or enthusiast use.

How do you override administrator?

That would involve hacking - which is illegal ! We in the Wiki community will not help you break the law !

Which is the best linux based os that can run on 256 mb of ram?

knoppix could probably run on that, but it is primarily a live disk os, so it might have issues if you want to use it as a desktop or server

What is the purpose of PATH variable in Linux?

It's an environment variable that stores the paths of commonly used executables. All OSes have this set, even on Windows.