Linux Servers

linux servers?
i'm interested in purchasing a POS server for home development purposes (going to configure the LAMP stack) the issue remains that i do not know anything about servers/linux/apache so i have several questions: do servers normally come with an operating system? is linux free? where would i get linux? is apache free/where to get apache? URL's to the proper place are also appreciated, thanks.

do servers normally come with an operating system? >> Yes is linux free? >> Yes, as per geek's definition of 'free' the guy is 'free' to give you with source code for $0 or add a sales value VAR $x usually they do it in the form of extended product support contract. where would i get linux? >> Any place, you can pretty much find official sites for feeding a distro complete name into a search engine. is apache free/where to get apache? >> Yes it is free, http://www.apache.org/ start with the no-frill bare bone of HTTP Server, PHP is also free but by another organization as an addon to the Server, same goes to MySQL.

Is there a difference in data transfer rates between winXP and Linux servers?
I am using a winXP laptop to act as my server (all usb external hard drives are connected to it) but the data transfer rates can be really slow. Is Linux faster in that regard? Can a Linux based server provide faster data transfer rates? Thanks.

Can't even compare it. Linux is better.

Is metaframe server administration can be done using unix or linux servers?


Citrix can be administred from a unix or linux box provided the distro has a GUI, like Red Hat. There is a remote desktop client that comes standard with Red Hat and i'm sure there are others as well. Or I suppose you could you VNC server on the citrix server and do a VNC connection from your linux/unix box. You could even use a browser with java support and access the server that way. Hope that helps. I'm sure there are many other methods available as well.

Can I use external Hard Drives on Linux based servers to add on addition storage space?


Yep. If you're using Apache, you'll have to edit your httpd.conf file to say that you want it to look in / for the files to send to your client's browser. This includes files other than HTML. If you don't have Apache configured to look in there for files instead using a / link in your HTML, most modern browsers will not load the content as the same thing could be used to load files from your client's computer.

I am looking for a good reliable virus acan for about 150 Unix/Linux enterprise servers?
I am looking for a reliable software with good after sales support. Please reply with details. Thanks, Dan

You seek that which probably doesn't exist. Linux doesn't get virus or trojan problems. If you have a mail server that is distributing e-mail to windoze machines, then you might want to run an anti-virus program to kill any virii before you send the mail on to susceptible windoze machines. The only AV program I know of in Linux is clamav. No doubt Symantec or other AV vendors have developed programs for Linux, but if you are not looking to filter e-mail before forwarding it to vulnerable windoze machines, don't bother. google "linux anti-virus" to see what is out there. See if P. T. Barnum is the author of any pro-AV for Linux articles.

Is there any runescape private servers that need no downloading and works for linux?
i need a runescape private server that dosent ANY download, and works for linux.thanks.

I suggest to not use these so called private servers. These are all illegal Runescape knockoffs that are designed to steal Runescape accounts and other pieces of personal identity that might be stored on your computer like banking and credit card information. Steer far away from them and only use the official game found at http://www.runescape.com

Can you use JSP on linux servers?
I'd like to build a system that fetches data from a DB and displays it on a webpage. I know usually PHP is used for that, but my friend said he can do it with JSP, only that not all servers support it. I know my website is on a linux server, would PHP be best to use in that case?

PHP would definitely be easier. But JSP is workable as well. The question is, can you run JSP on your current Web site? JSP requires two additional pieces of software that PHP does not need, (1) an application server (sometimes also referred to as "runtime environment"), and (2) a JDBC driver for your database. Collectively, these programs (and related services) are usualy referred to as "JSP support". If your server is maintained by a hosting company, JSP support may or may not be included in your plan; moreover, the company may or may not even have a plan that includes JSP support...

do you know linux servers very good? name servers?
i'm trying to build a website just like MySpace but having some linux server issues. my name servers are not working or not pointing to my ip address correctly or not starting at all. any advise is greatly appreciated. i'm looking to create a team as well. we can be partners if interested. this is around san francisco.

Linux server has great debugging ... You should find output of error message in /var/log/messages or for nameserver in /var/log/named or so (it may vary depending on distribution). If You don't know to configure it I recommend You to use some free DNS server like zoneedit.com or some pay service (google it). Also, You might find some employee to configure and maintain server for You ... I can work for You remotely ... limitman_at_gmail.com ...

Is there a way to easily shutdown a remote linux server with a shell script?
I have 3 linux servers hooked to my UPS. I can only hook the UPS to one of them. The UPS software will allow me to run a shell script on that one server before it shuts down. And I want that shell script to shut down the other 2 servers. Is this possible? @ Roland J: I AM FULLY AWARE OF HOW TO SHUTDOWN A LINUX MACHINE. @ Roland J: Please don’t answer a question unless you actually READ the question!!!!! It makes other people think the question is answered, when in reality, your just lazy to even read the full title of the question. (or you don’t know what the word “remote” means) I need to know how to shutdown a linux machine REMOTELY. This means that I want to run a script on LinuxBox1 and have LinuxBox2 (another linux server on same LAN) shut down.

Actually SSH would have to be set up first to allow passwordless, login between servers. I found the solution else where, and just wanted to post it here, in case anyone else stubles on this question looking for an answer. NOTE: IN THE RESOLUTION BELOW MANY OF THE COMMANDS ARE CUT OFF, OR INCORECTULY SHOW AS TWO LINES. FOLLOW THIS LINK FOR A PROPERLY FORMATED ANSWER. http://www.justlinux.com/forum/showthread.php?p=863427#post863427 RESOLUTION: Here's what I did... First I ssh'd from each machine to each other one. (The first time u ssh to new machine it asked you to accept the machines "fingerprint" and saves it -- this is just so they know who each other are. Then on the machine I wanted to be able to shutdown FROM I did [CODE] cd /root/.ssh/ ssh-keygen -t rsa [/CODE] and accepted the default location. (/root/.ssh/id_rsa) I left the passphrase blank, so it would not be required. Then basically you just need to copy that "id_rsa" file onto the DESTINATION machine, in the same directory, but named as "authorized_keys". Which can easily be done like this: [CODE] scp id_rsa.pub xxx.xxx.xxx.xxx:/root/.ssh/authorized_keys [/CODE] Where xxx.xxx.xxx.xxx is the IP address or host name of remote machine. [INDENT]NOTE: You may want to check if a file by that name already exists, on the remote machine, because the above command will overwrite it without warning. -- If you already have a file by that name on the remote machine, I would suggest using command above, but change the file name. Then on the remote machine, append the file you just copied to the existing one. This could easily be done like this: (there may be an even simpler way - but this is what I know) [CODE]mv /root/.ssh/authorized_keys /root/.ssh/authorized_keys.backup cat /root/.ssh/authorized_keys.backup /root/.ssh/yourfilename > /root/.ssh/authorized_keys [/CODE] [/INDENT] Then make sure the /root/.ssh/authorized_keys file has 600 permissions. [CODE] chmod 600 /root/.ssh/authorized_ keys [/CODE] Then try to ssh to the remote machine. [CODE] ssh xxx.xxx.xxx.xxx [/CODE] And if it works like it did for me -- it will let you right in, with no username or password. If this works correctly, you should be able to remotely run commands through ssh within scripts.

Windows Vs Linux Servers
I keep hearing how XP is no good as a server, that it is easily hacked. But what I don't understand is why? If I am running a cisco/linksys router with my firewall up and running XP how could it get hacked (aside from the obvious like, I download a trojan/keylogger or something stupid like that) Are these claims against XP lead only by the "heart" of Linux users and not their brains or am I missing something? Linux would be easier to hack as it allows SSH logins from remote locations I would think.

Linux belongs to the community since it's opensource so many admins love it only for this reason, meaning they know how and what to install on Linux, they can even build their own flavour from ground-up, depending on their experience. It's the type of people that don't want the others working for them and offering something that they cannot control and use to their own benefit. All Microsoft products enter this area and of course this doesn't mean there is something wrong with them, just that you don't have the freedom to do what you want with it, even if you bought the license. Windows is no more secure then Linux is, if the user knows how to handle it.