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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 stage of the grub boot loader typically resides on the master boot record?
Stage 1. It's a very VERY small program less than 500 bytes in size (Due to the limitations in the BIOS standard which forces MBRs to be almost unusably small by today's standards.) whose sole purpose is to load Stage 1.5 and, later, Stage 2 into memory and execute them, which will of course in turn load and run either a kernel or another bootloader.
What is the difference between symbolic link and hard link?
A hard link is an actual physical entity representing the link. i.e.--data file on a server.
A symbolic link is a pointer to a physical entity. The purpose of a symbolic link is, if the object moves, the symbolic link is coded so no matter where the object physically resides, the database can find it. It requires less administration not having to update locations in files pointing to files that have moved. Symbolic links function similar to the short-cuts in a DOS based operating system
AnswerIn Unix and Unix-like systems, a hard link is a directory entry (filename) that points to the file itself. The operating system keeps track of how many hard links point to a file, so when the last hard link to a file is removed, the file is deleted. A symbolic link is a special file that only contains a filename. The file that a symbolic link refers to may not necessarily exist at any given time.What is the difference between dual boot and multiboot?
Dual-boot means that you use two operating systems on one computer. Multiboot refers both to having several operating systems (usually more than three) on a computer, and to an operating system having built-in support for a bootloader that can load multiple operating systems (Linux, FreeBSD, and Solaris are all multiboot compliant, since they can accept kernel parameters directly from GRUB).
Which program is meant to replace SSH?
There is no particular program meant to replace SSH. SSH is considered a modern and secure program, so there is no reason to replace it.
CPanel is sort for the control panel. the basic idea Cpanel is where you go to operate and manage your hosting account.
CPanel is a program that runs on a Linux based web hosting servers.it's used by most web hosting companies out there now it's designed to make managing.
our web hosting accounts much easier by using a graphical interface with lots of different tools in it.
What advantages does LVM have over traditional partitions?
* use and allocate disk space more efficiently and flexibly * move logical volumes between different physical devices * have very large logical volumes span a number of physical devices * take snapshots of whole filesystems easily, allowing on-line backup of those filesystems * replace on-line drives without interruanpting services
How can you find out what services are running in Linux?
Most Linux distros are supplied with a number of process monitoring tools; the most used and most flexible is ps.top and htop mostly provide the same information in a more friendly format. Interpreting these commands requires some knowledge of the programs themselves, but most should have at least a man page. The grep command can help you filter the results to a specific program:
$ps ax | grep httpd
5392 ? S 0:00 /root/ispconfig/cronolog --symlink=/var/log/httpd/ispconfig_access_log /var/log/httpd/ispconfig_access_log_%Y_%m_%d
5404 ? S 0:00 /usr/sbin/httpd
5409 ? S 0:00 /usr/sbin/httpd
5416 ? S 0:00 /usr/sbin/httpd
5418 ? S 0:00 /usr/sbin/httpd
5420 ? S 0:00 /usr/sbin/httpd
5422 ? S 0:00 /usr/sbin/httpd
5424 ? S 0:00 /usr/sbin/httpd
5425 ? S 0:00 /usr/sbin/httpd
12286 ? Ss 0:04 /usr/sbin/httpd
25543 pts/0 R+ 0:00 grep httpd
30781 ? Ss 0:29 /root/ispconfig/httpd/bin/ispconfig_httpd -DSSL
30790 ? S 0:12 /root/ispconfig/httpd/bin/ispconfig_httpd -DSSL
30999 ? S 0:12 /root/ispconfig/httpd/bin/ispconfig_httpd -DSSL
um...7?
Shell scripts are used for repeatable processes, unattended operation, anything of a repetitive nature, etc. In short, they can be very valuable for just about anything.
How does a subroutine work in Linux?
With Linux being mostly written in C and normally interfaced via C libraries, I'll give an example from the C point of view, thus I'll refer to functions in place of sub routines.
Using the following C function as an example:
int add(int number1, int number2) { return (number1 + number2); }Before the add function is called, the values of its arguments are pushed onto the stack by the caller in reverse order (number2 then number1).
When the function is called, it reads the values of number1 and number2 from the stack into CPU registers where the addition is done, leaving the answer in register eaxbefore returning from the function.
What is var directory in Linux stands for?
Var directory is a sub directory of the root directory,
The system writes data during process of its operation.
Does Microsoft use a Linux server for their website?
For some things, yes.
While most of their back-end servers are running Windows, NetCraft shows some servers (such as download.microsoft.com) as running Linux. This is most likely due to their use of Akamai for content delivery, which has caching Linux servers in front of all sites.
Microsoft also has a farm of 10,000+ Linux servers that host the Skype infrastructure.
Is the Dell Photo All-In-One Printer 924 compatible with Kubuntu?
As of November, 2009, this printer is classified as a "paperweight" in the OpenPrinting database. So no.
A booking system is a modern day organizer to help make reservations for things such as flights, hotels, trains, cinemas and much more online.
What is the purpose of the mailertable file?
A sendmail mailertable allows you to over-ride the default routing for email, in other words, you can create special routing for arbitrary domains. There is probably nothing in the email world that can't be accomplished with sendmail, Eric Allman is a genius.
