Why not use Arch Linux only?

Named as an Arch Linux "Linux Addict" (according to my upgraded user profile ), for some times I have asked myself why use other distros than AL, especially RedHat, SuSE and Mandrake. What do they provide what AL doesn't?
One of the roles of RedHat became clear reading Linux Today, though it may not be for the common users but have to admit its impressive (there are three major advances in the new RHEL3 product line....):
http://linuxtoday.com/it_management/2003102200926NWRHSW
PS.
Does it sound like I am addicted??... it feels natural :idea:

maturity? stable? can't trust?
let me tell you something i learned by experience ...
i runed SuSE for long time (from 5.2 to 8.1) and what i know they do wrong is: if you have e.g. 6.0 (the most stable SuSE i know) then you can update your packages over internet, but after some time you will be "forced" to buy the next release that is totally differently constructed (7.1, because it uses YaST2 instead of the YaST and other stupid inovations that you cannot easily update from internet) ... and after a while again you have to upgrade by buying the next one ...
sure, you install it in about an hour and everything works, but hey, each package costs some money and this install is each time from quite 0 (because the integrated update often does not work) :-(
trusting?
i trust only in systems i configure myself ... and since SuSE 7.2 i lost the overview in where you can configure what and why ... and you are not sure that YaST2 will change your changed settings to default
archlinux is fully configureable and does not have a tool that changes files behind your back (well, there is one case: when you update init-scripts with packman without setting in pacman.conf to exclude some files you changed ... but also then you can restore the settings by mv'ing the original files to their right name-links :-)
why using also other distros?
well since arch 0.5 i removed all other linuces from my machine (to save space) and now have only arch and winXP ... xp is used only for watching tv (because hauppauge usb "usbvision" module cannot be compiled with a 2.4.x or 2.6.0tx kernel (but 2.5.x) and because of ebanking software that will not install on archlinux but easily on SuSE and WinXP (need the original sun's java vm, but have no time to construct a PKGBUILD for sun's jdk 1.4)
... and the needed other software i built packages of and installed on my local repository (and also copied in incoming) ... now i'm quite happy with archlinux as an OS (and i hope with a more advanced 2.6.x TV will come too, and java i will find one day time to build for ebanking)
-> "use an OS that works, use archlinux"
ps
and about "linux addict":
no, i dont think i'm addict, but i use this forum as a normal member (to help others switching to an os that works, to help people with problems i had myself often some time ago, to ask if i find something interessting or funny about something in arch, to inform that i built packages and put them in incoming :-) ... i would be much happier to have "regular user" instead of "linux addict", but that's something i cannot change

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Installing/using Arch linux in Parallels on Mac OS X Lion MBP Retina

I am having a problem where I can't install or use Arch Linux as the same error always crops up at some point or another.
loading user-specifide modules [busy]
pc_ich: RCBA is disabled by hardware/BIOS, device disabled
pc_ich [some random numbers]: I/O space for GPIO uninitialized
BUG: soft lockup -- CPU#0 stuck for 22s [kworker/u:0:5]
Thanks for any ideas.

I am pretty sure that Linux has some known serious issues with thre retina Macbook as well as some of the new Airs.
See this thread, it may help: https://bbs.archlinux.org/viewtopic.php?id=144255&p=1
Edit: Sorry i didn't read the "Parallels" in the title. Though I am not familiar with parallels, so I am not sure what kind of system it is actually trying to emulate. What happens if you use something else like virtualbox or some other free virtual machine software.
Last edited by WonderWoofy (2012-09-27 03:18:07)

Why not use interfaces for constants?

Hi,
I have been getting conflicting views about why not use interfaces for constants?
Can anyone shed some light on it?
Piyush

How so?
If the constants are only used in a single classhow
does it help to put them in a separate structute?
(Ignoring the a type safe enumeration of course.)Well, mainly for readability. Suppose that you have a
web application which has a servlet class
"RedirectServlet", which takes a variable to redirect
to a given JSP file. In the JSP files, you want to
create forms which take this servlet as their action.
You could of course put all these "redirect"
constants in the RedirectServlet itself, but then
it's kind of weird that you have to import a
servlet in your jsp file to include these constants
and to be able to write
<form action="servlet/RedirectServlet?key=<%=
RedirectServlet.HOMEPAGE %>> or so.
Instead, you could create an interface called
"RedirectConstants", and then your servlet
RedirectServlet could implement this interface. Then
your JSP can also access these constants via this
interface.
But then again, this is merely a matter of style, I
fully agree that there is never a real _need_ to put
constants in a separate structure if they're only used
in a single class.Are you claiming that your example above is a single class?

Why not use notifyall

now I'm reading this book "Java Threads 2nd edition" by Scott Oaks and Henry Wong. Writer provide a class called BusyFlag to simulate the mutex.
I wonder why not use notifyall() to replay notify().
public class BusyFlag {
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     protected int busycount = 0;
     public synchronized void getBusyFlag() {
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               try {
                    wait();
               } catch (Exception e) {
     public synchronized boolean tryGetBusyFlag() {
          if (busyflag == null) {
               busyflag = Thread.currentThread();
               busycount = 1;
               return true;
          if (busyflag == Thread.currentThread()) {
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          if (getBusyFlagOwner() == Thread.currentThread()) {
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naficbm wrote:
now I'm reading this book "Java Threads 2nd edition" by Scott Oaks and Henry Wong. Writer provide a class called BusyFlag to simulate the mutex.
I wonder why not use notifyall() to replay notify().Looks like it should work with notifyall as well.

Why not use "new" operator with strings

why we not use new when declaring a String .because in java String are treated as objects. we use new operator for creating an object in java .
and same problem wiht array when we declare array as well as initialize .here we are alse not using new for array
why

Strings aren't just treated as objects, Strings are Objects.
As for why not using new for Strings, you can, if you want.:
String str = "this is a string";
and
String str = new String("this is a string");
do the same thing (nitty-gritty low level details about literals aside). Use whatever you like, but isn't it simpler not to type new String(...) since you still need to type the actual string?
As for arrays, you can use new:
int[] ints = new int[10];
or
int[] ints = { 0, 1, 2, 3, ..., 9 };
But the difference here is you are creating an empty array in the first one, the second creates and fills the array with the specified values. But which to you often depends on what you are doing.

Why not use paper label on finished DVD project?

I also use printed paper labels for my DVD covers
why not use them?
please advise?

Hi
The DVD get's unbalanced = Laser can't read track
DVD are several times more sencitive than CD (not advicable to put lables on them either)
And DVDs/CDs that are unbalanced also give more strain to the player mechanism
that eventually stops working.
Yours Bengt W

[SOLVED]Is there anybody using arch linux in coLinux?

Hei,guys!
I'm using arch linux in coLinux.I got the image file from sf and I successfully booted it on my machine,em,everything seemed to be OK.But when I tried to do this:
pacman -Syu
I got this message :
checking package integrity...
error: error while reading package /var/cache/pacman/pkg/gdbm-1.8.3-7-i686.pkg.tar.xz: Unrecognized archive format: Invalid or incomplete multibyte or wide character
error: failed to commit transaction (libarchive error)
Errors occurred, no packages were upgraded.
I think the pacman(maybe just libarchive) is too old to recognize the .pkg.tar.xz files. So dose someone have an idea to work out it?
Last edited by Cristie (2011-05-28 16:03:35)

@twilight0:yeah,I acknowledge that,but it didn't work at all. I guess you didn't understand my problem. You know, the pacman coudn't upgrade (in fact I was unable to install any packages) just because the libarchive package was out of date (it meant that I could do nothing with the .tar.xz files downloaded from the mirrors).So I solved the problem by doing like this(Stupid it is, but it really works):
1.Download libarchive from any of the mirrors around the world.
2.Find a way to access to the files you just downloaded.
3.Replace the original libarchive files.
4.Mofify the local db.It is OK to do this:go to /var/lib/pacman/local,rename the libarchive-VERSION to current version.
Then I found that depences need openssl >= 1.0.0, so try the same proccess with it.
So,now everything is running very well.
Last edited by Cristie (2011-05-28 16:20:03)

I have the iPhone 4 recently became weak Wi-Fi where I can not use the Internet only when sitting Bejjani router, Can anyone help me in solving this problem please iPhone 4, iOS 7.0.3

I have the iPhone 4 recently became weak Wi-Fi where I can not use the Internet only when sitting Bejjani router, Can anyone help me in solving this problem please
iPhone 4, iOS 7.0.3

There's a whole lot to read in your post, and frankly I have not read it all.
Having said that, this troubleshooting guide should help:
http://support.apple.com/kb/TS1538
In particular, pay attention to the mobile device support sections near the bottom, assuming you have already done the items above it.

Why I love Arch Linux :D

Today, I enabled kms by default, only editing mkinicpio.
Before kms, I had been totally unable to get a full resolucion frambuffer, even with uvesafb. And i915-resolution didnt even
recognised my card, a Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
But when I first booted with kms, I thought I was in heaven
Also, with this new drivers, that annoying bug in openbox when using rgba + murrine + xcompmgr + openbox(making window borders
use false transparency) is nowhere to be seen n_n.
Last, but not least, because of the x86_64 april's fools day joke, I made the swich to 64-bits in 2 days! And just 10 minutes ago,
I deleted my 32-bit particion n_n
Arch Linux, just rock U_U

XFire wrote:No bloat; rolling release; easy to configure system - no other distro seems as easy to configure; everything seems to more or less work after some configuration; just about everything.
What XFire said. I really love Arch because of this - the community is also pretty big behind it, which is a big plus. Just go to the IRC channel and you will be able to speak to archers right away about your troubles and problems - you don't even have to go out and drink them away!
But I also really like that the system does not break as much as Gentoo did for me after a simple system update. Mostly nowadays it is because of Xorg, which usually is easy to fix. In Gentoo everything broke and took a lot of time to do, because of recompilation and stuff. I am really happy that I made the change, and I got myself a fine sticker for my laptop to show off that this system runs Arch.

Why we use PCLn tables only in HR ?

Hii
Kindly explain me why we use special PCLn tables for storing data in data clusters ,This kind of storing data is not used in other modules such as SD MM etc why only in HR module ?
That too in cluster tables we store specific data like Payroll data why ?
Please help.
Thanks
Ajitabh Pradhan

Hi,
maybe ask directly SAP
Cluster table is not really usefull, I prefere transparent table for development. But, you have cluster table like STXL, STXBITMAPS, ... for special requierement.
Why do you want to use cluster tables ?
Rgd
Frédéric

Why not use Redo log for consistent read

Oracle 11.1.0.7:
This might be a stupid question.
As I understand if a select was issued at 7:00 AM and the data that select is going to read has changed at 7:10 AM even then Oracle will return the data that existed at 7:00 AM. And for this Oracle needs the data in Undo segments.
My question is since redo also has past and current information why can't redo logs be used to retreive that information? Why is undo required when redo already has all that information.

user628400 wrote:
Thanks. I get that piece but isn't it the same problem with UNDO? It's written as it expires and there is no guranteee until we specifically ask oracle to gurantee the UNDO retention? I guess I am trying to understand that UNDO was created for effeciency purposes so that there is less performance overhead as compared to reading and writing from redo.And this also you said,
>
If data was changed to 100 to 200 wouldn't both the values be there in redo logs. As I understand:
1. Insert row with value 100 at 7:00 AM and commit. 100 will be writen to redo log
2. update row to 200 at 8:00 AM and commit. 200 will be written to redo log
So in essence 100 and 200 both are there in the redo logs and if select was issued at 7:00 data can be read from redo log too. Please correct me if I am understanding it incorrectly.I guess you didnt understand the explaination that I did. Its not the old data that is kept. Its the changed vector of Undo that is kept which is useful to "recover" it when its gone but not useful as such for a select statement. Whereas in an Undo block, the actual value is kept. You must remember that its still a block only which can contain data just like your normal block which may contain a table like EMP. So its not 100,200 but the change vectors of these things which is useful to recover the transaction based on their SCN numbers and would be read in that order as well. And to read the data from Undo, its quite simple for oracle to do so using an Undo block as the transaction table which holds the entry for the transaction, knows where the old data is kept in the Undo Segment. You may have seen XIDSEQ, XIDUSN, XIDSLOT in the tranaction id which are nothing but the information that where the undo data is kept. And to read it, unlke redo, undo plays a good role.
About the expiry of Undo, you must know that only INACTIVE Undo extents are marked for expiry. The Active Extents which are having an ongoing tranaction records, are never marked for it. You can come back after a lifetime and if undo is there, your old data would be kept safe by oracle since its useful for the multiversioning. Undo Retention is to keep the old data after commit, something which you need not to do if you are on 11g and using Total Recall feature!
HTH
Aman....

Trying to use Arch Linux with a T-Mobile HSPDA E1750 USB dongle

Hello all,
I have just installed Arch Linux on my desktop and need a way to either connect it to my LAN which is sharing the dongle connection from my laptop running ubuntu 10.04 via, ICS, DHCP3 and FIrestarter, Or simply plug in the dongle to my Arch Desktop. I have been researching commands to connect to networks with all day and have had no luck. My internet connection is being shared over ethernet through a DSL-2640R router.
I need this connection so i can install the GUI and make it fully functional. So if anyone has any ideas, guides or sites that may help me with this problem then please share.
Thank you,
SlashWannabe94

Hello, I bought a Huawei E1750, too. Today I got it working.
The most important things I got from here.
However, my stick differs a bit from yours as it has product ID 1436.
There was no need for an udev-rule, I wouldn't even know where to put it in etc (there is no udev/rules.d folder in arch?).
You need "usb_modeswitch" and the "option" module. At first I wrote an usb_modeswitch configuration, but it seems not necessary as commenting it out had no influence. The option module is loaded for me if i plug the stick in, no need to care about it further. So, except for installing usb_modeswitch everything works out of the box.
If dmesg tells you something like:
[33750.443606] cdc_ether 2-1.5:1.1: wwan0: register 'cdc_ether' at usb-0000:00:1d.0-1.5, Mobile Broadband Network Device, 02:50:f3:00:00:00
[33750.443756] usbcore: registered new interface driver cdc_ether
[33750.455202] USB Serial support registered for GSM modem (1-port)
[33750.455286] option 2-1.5:1.0: GSM modem (1-port) converter detected
[33750.455665] usb 2-1.5: GSM modem (1-port) converter now attached to ttyUSB0
[33750.455692] option 2-1.5:1.3: GSM modem (1-port) converter detected
[33750.455823] usb 2-1.5: GSM modem (1-port) converter now attached to ttyUSB1
[33750.455839] option 2-1.5:1.4: GSM modem (1-port) converter detected
[33750.455967] usb 2-1.5: GSM modem (1-port) converter now attached to ttyUSB2
that should be the case for you, too. This means modeswitch did its job and you are ready to connect.
Now you have to tell your pin to the stick and connect. I'm doing this using "wvdial" and "pppd".
You'll need the "ppp_generic" module to proceed.
My /etc/wvdial.conf looks like this:
[Dialer Defaults]
Modem = /dev/ttyUSB0
Baud = 460800
[Dialer pin]
Init1 = AT+CPIN=1234
[Dialer provider]
Phone = *99#
Username = fonic
Password = fonic
Stupid Mode = 1
Dial Command = ATDT
Init2 = ATZ
Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init4 = AT+CGDCONT=1,"IP","pinternet.interkom.de"
Adopting the pin and the connection address should do. Then you can start your internet by typing:
wvdial pin
wvdial provider
I have to admit wvdial did not work at first(the device refused the AT commands). From frustration I started windows to see if it works there, it did, and the next day this whole configuration simply worked.
Success!
Last edited by stuffel (2011-07-20 22:36:12)

Use Arch Linux Disc Just For GRUB?

I already installed Arch linux, and have it up and running just fine. I have a second hard drive that has no partitions or uses as of yet. Would it be possible for me to install Windows on /sdb, install GRUB with the Arch disk to /sda, uncomment out the WIndows entry in the GRUB .conf file, and get a working dualboot?

Let's clarify exactly what you want to do.
My understanding at this point is that sda is the main boot disk and that you currently have GRUB and Arch installed on it. You want to install Windows on sdb and you think that you have to overwrite GRUB on sda during the boot process to get Windows to boot properly. You therefore want to know how you can restore GRUB on sda after a successful installation of Windows on sdb.
If that's not the case, please clarify further.
If that is the case, then I don't think you need to do it that way. Set sdb to the main boot disk and then install Windows and the Windows boot loader normally on sdb. Once that's done, reset the main boot disk to sda and then edit GRUB to chainload sdb. This way you do not need to faff about with the Windows boot loader later if you decide to boot directly into Windows at a later date. The Windows installation remains independent on its own disk which is the easiest way to dualboot imo.
As for your question about installing GRUB from the liveCD, I think your actual question is whether you can overwrite the MBR of sda with GRUB from the liveCD (which is not the same as "installing" GRUB). I think you can by jumping to that step in the setup, but I am not sure and I suggest that you wait for confirmation from someone else who is.
Last edited by Xyne (2009-08-21 23:19:11)

Why not use Jsp for control in MVC2 ?

hi
i am rajendra , i am preparing interview FAQ, so please give me my Que. Ans.
1) we are using servlet for control in MVC2 Module,then why we can not use
Jsp for control in mvc2
2) if we used jsp for control in mvc2 then what is disadvantage compare to if using servlet for control in mvc2
Please give me ans. as soon as..
Thanks.

Are you preparing a FAQ for others or are you just cramming before an upcoming interview and someone gave you a set of questions? It looks more like the latter to me.
If you haven't actually written any MVC based code, you won't be able to snow the interviewer. It's better to just relax, get a good night's sleep and impress them with your willingness to learn, your fit with the team and whatever real accomplishments you have to show.
If you really want an answer to this I suggest that you try writing an MVC2 system using JSP for the controller, which is possible, and then try doing the same in a servlet, or better yet using a framework like Spring MVC or Struts to provide the servlet for you and let you concentrate on your application.

Apache VS Netscape Why Not Use Apache....

Is this correct?
          I should use Netscape as a proxy server to proxy jsp and servlet requests to
          a weblogic cluster because the libproxy.so module has special functionality
          in dealing with weblogic clusters.
          I should NOT use Apache because it does not handle the in-memory replication
          of Sessions to the weblogic cluster.
          Why shouldn't I use Apache in a clustered environment?
          Thanks
          Michael Schreiber


               Your assumption is correct. Currently there is no Apache plugin to
          handle session replication for a clustered environment in 4.51. You can
          use Apache's mod_proxy for simple proxying, but that will not handle
          failover or load balancing. An apache plugin for clustered setups will
          be available in Weblogic 5.0 (currently in public beta).
                              - Mike
          Michael Schreiber wrote:
          >
          > Is this correct?
          >
          > I should use Netscape as a proxy server to proxy jsp and servlet requests to
          > a weblogic cluster because the libproxy.so module has special functionality
          > in dealing with weblogic clusters.
          >
          > I should NOT use Apache because it does not handle the in-memory replication
          > of Sessions to the weblogic cluster.
          >
          > Why shouldn't I use Apache in a clustered environment?
          >
          > Thanks
          > Michael Schreiber

Why not use Arch Linux only?

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