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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

Why won't ksensors display hddtemp information running as daemon either in user or root mode?

ksensors does not need hddtemp to run as deamon set suid root on hddtemp (debian: dpkg-reconfigure hddtemp) and run ksensors as a normal user.

What countries use defense diplomacy?

Defence diplomacy as an organizing concept originated with Western defence establishments, especially the UK Ministry of Defence, in the early post-Cold War period. It is generally understood as the peaceful application of different defence resources, including ship visits, military exercises, training and capacity-building as well as high-level interaction (e.g. at the Secretary/Minister of Defence level). Many countries employ defence diplomacy in support of their overall foreign policy; trying to build defence relationships that can further their current aims or that can be called upon in a crisis.

Today, aspects of defence diplomacy are employed by countries with very different philosophies and intentions -- China uses defence diplomacy, as do Russia, India, Brazil and of course major Western/NATO powers (USA, UK, Canada, Australia).

Defence diplomacy is distinct from "gunboat diplomacy", which is more intended to intimidate than to build relationships.

Why Linux is the best operating system?

Linux is the generic name for a UNIX-like operating system that can be used on a wide range of devices from supercomputers to wristwatches. The Linux kernel is released under an open source license, so anyone can read and modify its code. It has been modified to run on a large variety of electronics. Although estimates suggest it is used on only 0.5-2% of all personal computers,[8] it has been widely adopted for use in servers and embedded systems[12][13] (such as cell phones). Linux has superseded Unix in most places[which?], and is used on the 10 most powerful supercomputers in the world[14].

The GNU project is a mass collaboration of programmers who seek to create a completely free and open operating system that was similar to Unix but with completely original code. It was started in 1983 by Richard Stallman, and is responsible for many of the parts of most Linux variants. For this reason, Linux is often called GNU/Linux. Thousands of pieces of software for virtually every operating system are licensed under the GNU General Public License. Meanwhile, the Linux kernel began as a side project of Linus Torvalds, a university student from Finland. In 1991, Torvalds began work on it, and posted information about his project on a newsgroup for computer students and programmers. He received a wave of support and volunteers who ended up creating a full-fledged kernel. Programmers from GNU took notice, and members of both projects worked to integrate the finished GNU parts into the Linux kernel in order to create a full-fledged operating system.

What does Crtl plus Del do?

Nothing on my Linux Ubuntu system.

In a word processing application, Ctrl + Del erases the characters up to the next "whitespace"

How do you recover your password in SUSE Linux?

have a look @ http://en.opensuse.org/Recover_Root_Password

you will need a install media (boot CD or DVD) for the (open-)SUSE version you want to recover the root password from

in fact, RECOVERING is not the right word, here; the only way to recover it is to have it written down somewhere or someone else remembering it (still); otherwise, you are down to RESETTING the root password.

boot the system from the install media by choosing RESCUE (type F2 / F3 / F4 / F5 in the boot menu to see which option does that; Linux rescue is a good bet).

once finished booting, you have to make your server / workstation's root partition the current root;

1st determine which is the root partition of your server;

$> ls -l /dev/sd*

will show you all (e-)sata and usb devices and the partitions thereon. some newer motherboard also show ATA disks here; otherwise you will get list of ATA devices with

$> ls -l /dev/hd*

for other devices like (external) RAID, if you don't know which device it is, start the install (just hit the enter key without typing in Linux rescue) and choose ADVANCED partitioning. this will show you all the available disks & there partition.

once you know which partition is the root, follow «CD/DVD Recovery Mode» from above link

What version of Linux do HP netbooks run?

HP netbooks that come with Linux use a customized version of Ubuntu known as "Mi."

What is Linux command ls-file name command?

(ls) means list directory

(ls -l) to long list

and also used to show file or directory permissions.

==========================================================

Tray it

==========================================================

[root@localhost /]# ls /

ahmedtest boot etc lib media mnt opt root selinux sys usr

bin dev home lost+found misc net proc sbin srv tmp var

[root@localhost /]# ls /etc/passwd

/etc/passwd

[root@localhost /]# ls -l /etc/passwd

-rw-r--r-- 1 root root 1587 May 27 02:30 /etc/passwd

[root@localhost /]# ls -l /etc/passwd

-rw-r--r-- 1 root root 1587 May 27 02:30 /etc/passwd

[root@localhost /]# ls -n /etc/passwd

-rw-r--r-- 1 0 0 1587 May 27 02:30 /etc/passwd

Would the ls -a command show hidden files?

Yes, in Linux or Unix, this command will show all files including hidden files in the current directoryl. In general, hidden files are files whose name begins with a period "."

How do you type a 1 half in symbol on the keyboard?

One method is to simple type: 1/2

Or, depending on your operating system (Windows, Linux, Mac, etc) there is usually a special character utility, where you can select and paste in the half symbol.

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.

The Directory was .?

A+ not highly successful

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.

What is c panel in Linux?

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

Where are shell scripts used?

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.