BSD/Linux Tutorial Zone

Recently the PCManX BBS tool in Linux has released a new version of pcmanx-gtk2-0.3.9.tar.bz2, but develop team has changed the download link to the following address http://code.google.com/p/pcmanx-gtk2 in this time, this site is the official web site, if there are people want to use it and do not rush to download it, please visit this official first that isbecause whether you are using Ubuntu, Debian, Fedora, Mandriva can be through the web site ways to update or install it.
Of course, this update fixes a number of areas have also added a number of features, so i don't need to introduce it and how to install it here, if you have visited this site. The only thing I think that is most useful for me that is the problem of gcc 4.4 and gtk + <2.10 build failures has been fix, how should I say? That is because most of Linux distribution release new version faster and that is one of the causes of the new gcc version machine can't be compiled and installed normally, but this version can solve the problem, so it's really a good news for New distribution user.
However, it seems a pity that it does not use pre-compiled version for openSUSE and we can only compile by ourself...
Also, if you want to directly use the Mozilla / Firefox plugin for PCManX, please download this file self-extracted according to README way enable-plugin to compile it, because the official document had a very detailed installation and compilation of teaching, so would like to know any relevant information please refer to official information...

Recently, I always receive an error message from the httpd-error.log file of my own apache server, this problem has crashed httpd service for three weeks and i don't know how to fix it no matter how i hard to search information in google or yahoo search engine, during this period I was persecuted with this problem.
However, i found the solution to fix this problem and finally this error message will not appear again.
When you check the httpd-error.log file, if you also see the following message in the bottom, please follow my steps below to fix it.

• 1. Modify the following file that relate to tuning high performance.

FreeBSD:
# vi /usr/local/etc/apache22/extra/httpd-mpm.conf
openSUSE:
# vi /etc/apache2/server-tuning.conf

• 2. Change the contains for the same values as below.

    MaxSpareThreads    512
    MaxClients        512

• 3. Restart apache service then the error message disappear...

FreeBSD:
# /usr/local/etc/rc.d/apache22 restart
openSUSE:
# service httpd restart


[Sat Aug 29 00:13:37 2009] [notice] Apache/2.2.9 (FreeBSD) DAV/2 PHP/5.2.6 with Suhosin-Patch configured -- resuming normal operations
[Sat Aug 29 00:13:39 2009] [notice] child pid 65754 exit signal Segmentation fault (11)
[Sat Aug 29 00:13:40 2009] [notice] child pid 65755 exit signal Segmentation fault (11)
[Sat Aug 29 00:13:42 2009] [notice] child pid 65757 exit signal Segmentation fault (11)
[Sat Aug 29 00:13:43 2009] [notice] child pid 65756 exit signal Segmentation fault (11)
[Sat Aug 29 00:23:32 2009] [notice] child pid 65758 exit signal Segmentation fault (11)
[Sat Aug 29 00:29:56 2009] [warn] child process 65788 still did not exit, sending a SIGTERM
[Sat Aug 29 00:29:58 2009] [warn] child process 65788 still did not exit, sending a SIGTERM
[Sat Aug 29 00:30:00 2009] [warn] child process 65788 still did not exit, sending a SIGTERM
[Sat Aug 29 00:30:02 2009] [error] child process 65788 still did not exit, sending a SIGKILL
[Sat Aug 29 00:30:03 2009] [notice] caught SIGTERM, shutting down
[Sat Aug 29 00:30:03 2009] [notice] seg fault or similar nasty error detected in the parent process

Sometimes you will see a pop-up message about permission that will confirm whether allow or deny this program you are using in Windows 7, so you may want to disable this boring message from system, but due to windows 7 is so new that you may not know how to do it.
Actually, you just need to disable UAC function of Windows 7 that can avoid pop-up message appear again...
Please follow these steps below to disable it right now!

• 1. Select start -> Control Panel first

• 2. Please click User Accounts and Family Safety in Control Panel window

• 3. In this step, please click User Accounts

• 4. Now, please click Change User Account Control Settings

• 5. Finally, the last step for complete disabled UAC. You shall move the scroll bar to the bottom (Never notify) and then click OK button

When you installed the apache server by default after a single ip does not restrict the number of modules to connect, so you must re-install another package to achieve this goal, lest the spam or attack caused your server crashed, if you are using apache, you only need to install this package and then set mod_limitipconn to avoid many TCP sessions in your server, especially FreeBSD is more easy to install set up, the following is the installation steps:

• 1. Install this module from /usr/ports

# cd /usr/ports/www/mod_limitipconn2
# make install clean

• 2. Modify httpd.conf file as example below:

LoadModule limitipconn_module libexec/apache22/mod_limitipconn.so
ExtendedStatus On

<ifmodule mod_limitipconn.c>
    <location />
    MaxConnPerIP 8
    NoIPLimit image/*
    </location>
    <location /cgi-bin>
    MaxConnPerIP 8
    </location>
</ifmodule>

Due to i am required to procure Storage system by my company this while, so I have investigated the different brands of Storage and the last chose Proware's EN-3166JS3H-QX, why I would choose it? Price is the most important factor, its price less than the IBM DS series.
The machine use the Linux embedded to be operating system, so only one step need to do after purchasing that is to set the Raid configuration by yourself.
I can use Webui to login and configure this machine, rsync is one of the services in this machine, and my task is to use rsync to backup windows server files to this machine.
The backup client is Windows Server 2008 X64 and do you know how can i use rsync in Windows Server 2008(X64)? cwRsync is the best way for Windows rsync client or server, i will use cwRsync to final my task and my steps as below...

• 1. Download cwRsync server or client software for windows from the following link.

http://sourceforge.net/projects/sereds/files/cwRsync/

• 2. According to the EN-3166JS3H-QX support functions, we will configure EN-3166JS3H-QX as rsync server mode to make sure windows client can access and then backup to this machine.

• 3. Install cwRsync_3.1.0_Installer.exe and unclick Secure Channel Wrapper, you will ask me why i unclick it that is because the Linux embedded system of EN-3166JS3H-QX can't be stored.

• 4. Copy cwRsync folder from Program Files (x86) to Program Files and then write a batch file as follows:

@ECHO OFF
SET CWRSYNCHOME=%PROGRAMFILES%\CWRSYNC
SET CYGWIN=nontsec
SET CWOLDPATH=%PATH%
SET PATH=%CWRSYNCHOME%\BIN;%PATH%
SET Rsync_Password=aaa
rsync.exe -arvz /cygdrive/d/backupaaa@192.168.1.10::backup

• 5. Save this batch file and then schedule it in Windows Server 2008.

PS:Please change your username and password and directory above for your environment
SET Rsync_Password=[password]
rsync.exe -arvz /cygdrive/[localDir] [user]@[host]:[remoteDir]

If you are using FreeBSD not Linux you can refer to the following steps to add or remove alias ip address.

• 1. Add ip alias for re0

# ifconfig re0 inet 172.16.0.2 netmask 255.255.255.0 alias
# ifconfig

re0:        flags=8843 mtu 1500
              options=18
              inet6 fe80::213:d3ff:fe9b:5a34%re0 prefixlen 64 scopeid 0x1
              inet 192.168.234.62 netmask 0xffffff00 broadcast               192.168.234.255
              inet 172.16.0.2 netmask 0xffffff00 broadcast 172.16.0.255
              ether 00:13:d3:9b:5a:34
              media: Ethernet autoselect (100baseTX )
              status: active
plip0:      flags=108810 mtu 1500
lo0:        flags=8049 mtu 16384
              inet6 ::1 prefixlen 128
              inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
              inet 127.0.0.1 netmask 0xff000000

• 2. Remove ip alias for re0

# ifconfig re0 inet 172.16.0.2 -alias
# ifconfig re0

re0:        flags=8843 mtu 1500
              options=18
              inet6 fe80::213:d3ff:fe9b:5a34%re0 prefixlen 64 scopeid 0x1
              inet 192.168.234.62 netmask 0xffffff00 broadcast               192.168.234.255
              ether 00:13:d3:9b:5a:34
              media: Ethernet autoselect (100baseTX )
              status: active
plip0:      flags=108810 mtu 1500
lo0:        flags=8049 mtu 16384
              inet6 ::1 prefixlen 128
              inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
              inet 127.0.0.1 netmask 0xff000000

• 3. Add ip alias in /etc/rc.conf

# vi /etc/rc.conf

ifconfig_re0_alias0="inet 172.16.0.2 netmask 255.255.255.0"

Sometimes, you need to add or remove another IP alias immediately for testing and you are using Traditional Method with ifup mode not Network Manager. Do you know how to do it?
Now, you can follow this way to add or remove ip alias rapidly:

• 1. Add ip alias for eth1

# ifconfig eth1:1 inet 172.16.0.1 netmask 255.255.255.0
# ifconfig

eth1       Link encap:Ethernet HWaddr 00:16:E6:85:64:14
              inet addr:192.168.234.37 Bcast:192.168.234.255               Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              RX packets:1446653 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1088809 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:342967398 (327.0 Mb) TX bytes:95239075               (90.8 Mb)
              Interrupt:16

eth1:1    Link encap:Ethernet HWaddr 00:16:E6:85:64:14
              inet addr:172.16.0.2 Bcast:172.16.0.255               Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              Interrupt:16

• 2. Remove ip alias for eth1

# ifdown eth1:1
# ifconfig eth1

eth1       Link encap:Ethernet HWaddr 00:16:E6:85:64:14
              inet addr:192.168.234.37 Bcast:192.168.234.255               Mask:255.255.255.0
              UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
              RX packets:1446633 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1088792 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:342965665 (327.0 Mb) TX bytes:95236944               (90.8 Mb)
              Interrupt:16

If you have read my past articles, you should underestand what the eaccelerator module improve for apache.
Yes, it's an accelerator to make your apache server can response more request in the world, of course in my past article has shown you how to install this, but your can modify something to fulfill your environment, you can see my past articles as below for remember something...

http://www.ardoros.com/2008/09/how-to-upgrade-apachemysqlphp-on.html
http://www.ardoros.com/2008/09/eaccelerator-installation-guide-on.html

Now, you can attempt to review my following easily way to modify your eaccelerator values.

# vi /usr/local/etc/php/extensions.ini

[eaccelerator]
extension=eaccelerator.so
eaccelerator.shm_size="256" - modify it by your machine memory size
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.log_file = "/var/log/httpd/eaccelerator_log"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
eaccelerator.keys = "shm_and_disk"
eaccelerator.sessions = "shm_and_disk"
eaccelerator.content = "shm_and_disk"

Plurk is one of all social toolsl that will help you to share your life easily with friends, family and fans...
Many people are using Twitter to share life in the world, but Plurk provides more functions than Twitter, one of these functions is "Time Line" and you can see what they are doing from your fans, friends, family any time and which time.
If you want to know about Plurk, you can also refer to this link http://www.blahblahtech.com/2008/06/what-is-plurk.html that provides tutorial for how to use.
However, the purpose of this article is to teach you how to use Plurk code in your blogger, that is because the widget provided by Plurk official can not fulfill the major demand of blog owner.

You only need to add javascript code though Add a Gadget in your blogger:

• 1. Copy this javascript code and modify title name, image source link for you want.

<a href="javascript: void(window.open('http://www.plurk.com/?qualifier=shares&status=' .concat(encodeURIComponent(location.href)) .concat(' ') .concat('(') .concat(encodeURIComponent(document.title)) .concat(')')));" title="share to plurk"><img src='http://lifestory.moqin.com/wp-content/uploads/2009/08/Plurk-life.png' border="0"/></a>

• 2. You will see the icon like this and if you click this icon in "How to use Twitter and how to follow?" article that should be directed to Plurk automatically.

• 3. Now, you just need to click Plurk button for share article.

Although Twitter is the most popular tool of socially tool in the world, but many people do not know how use it yet until now which are older people or some poor persons or kids...
So, i summarize some steps for register and follow in Twitter, if you don't know how to use Twitter, please refer to my following step:
Join it and have fun!

• 1. First, you need to go to Twitter's website http://twitter.com/ and then click Sign up now

• 2. Please fill out your information in this page and then click Create my account

• 3. You can login your account of yahoo, gmail and aol for invite your friend to join Twitter and then click Continue.

• 4. Now, you can write down something so that your friends know what are you doing.

• 5. If you want to share the Twitter status to your friend, you can tell them the twitter link like this http://twitter.com/your account so that they can follow you easily.

Here is example for follow my Twitter : http://twitter.com/ardoros

Twitter is a magical tool to extend your human relations, if you have never try it, you may want to know what is this and then i will tell you that is one of the most popular community tools, you can update your status of your life or send a message through Twitter anywhere, whether using your mobile phone or blog or a computer....
If you still don't know What exactly Twitter is, you can refer to the following video that will show what is Twitter!

You can see my last article for add favicon.ico in your google blogger, but if you want to covert the image file to favicon.ico in Linux, you may don't know how to it. Actually, the ico image format is easily to convert in Linux system, i will show you how to in the following steps:

• 1. Install netpbm

# zypper in netpbm - for openSUSE
# sudo apt-get install netpbm - for Ubuntu
# yum install netpbm - for Fedora

• 2. Please type command as below

# pngtopnm favicon.png | ppmtowinicon -output favicon.ico

PS: If you received a message like this, please modify your pixel color to 16x16 of favicon.png.

ppmtowinicon: Unable to make palette for '-'. image has too many colors - try doing a 'pnmquant 256'

Example:

A lot of free Blog services should have the same problem, it is to create a personalized small icon "favicon.ico" as other websites, the icon will appear before the address bar although many people do not care about this icon, but if you want to create your logo and image for your company, the company site shall has more personalized image files.

However you how to create this icon in google blogger as well? In fact, you only need a few simple steps as follows:

• 1. Create your favicon.ico file and the adjust the pixel color to 16x16.

• 2. Upload your favicon.ico to free space that you have.

• 3. Select Layout -> Edit HTML and then click Download Full Template to backup template you are using.

• 4. Modify HTML code of your blogger.

go to your blogger and Select Layout -> Edit HTML

and look for this code (it shall be at the top of the template)
<title><data:blog.pageTitle/></title>

and add the below code after the above code
<link href='your favicon.ico link address' rel='shortcut icon'/>

<link href='your favicon.ico link address' rel='icon' type='image/ico'/>



You will see the example result as below:

Do you want to receive your all of mail accounts via pop3? If you have never try FreePOPs you shall install it right now. It will help you to receive gmail and hotmail and yahoo ... mail accounts through the POP3 protocol, if you try to use it, you will need not to login your mail accounts form Webmail site again.
If you are using openSUSE, you can add Packman Repository and then install this package from zypper or software management.

# zypper ar http://packman.unixheads.com/suse/11.1/ Packman Repository
or
# zypper ar http://packman.unixheads.com/suse/11.0/ Packman Repository


# zypper in freepops

After the installation is complete, you will need to update FreePOPs information using following command.

# freepops-updater-zenity

I don't know whether you try to find out the server location or ip address when you browse any website? Maybe this information is not useful for you, but i still want to show you something that is one of Firefox add-ons Flagfox.

It can let you know the current website’s server location and ip address, that shows a flag icon indicating the current website's server location in the Firefox status bar. The context menu also provides quick access to information about the country of origin, as well as the ability to lookup the site’s registrant via Whois.

Steps

Step 1: Search flagfox from add-ons website and then click Add to Firefox button as below

Step 2: When the Software Installation window appear, please click Install Now button

Step 3: Please restart Firefox after installation

Step 4: This add-on is available in the right menu of the flag icon in the status-bar right now. You can click Preferences button to change the settings of Flagfox.

Step 5: The following diagram shows Flagfox options and you can change any settings in Flagfox Options.

Actually, The site "AddThis" has provided social tools that has used by many blog owners for a long time, but there are still many Blog owners do not know how to add as there are many types of the community link tools, and AddThis is one of many tools, of course, Twitter、Facebook、FunP、Digg ... and so on, have their own blog to provide for different use of the Widget allows you to more easily add their code in your Blog article at the bottom or side bar, but if you have tried to add their tools in your template of Blog, you will find the layout can not be uniform.
Unless you can get or make consistent patterns, you shall use AddThis tool in your blog that will be the best solution.
Now, please refer to the following steps to add this social tool in your blogger.

FreeBSD is not very popular like linux today, but that is still my favorite system of all. I always need to upgrade my freebsd server when the security issues has been solved. CVSup is one of system upgrade tools that has been used by much people for long time ago. Although, freebsd has provided other upgrade tools such as csup and freebsd-update in default, I am still used to upgrade system by cvsup.

If you are also want to use it, please follow my procedure below to upgrade your freebsd system.

#cd /usr/ports/net/cvsup-without-gui
#make install clean
#cp /usr/share/examples/cvsup/stable-supfile /tmp
#vi /tmp/stable-supfile —> modify default host for your location

*default host=cvsup.tw.freebsd.org

#cvsup -g -L 2 /tmp/stable-supfile
#cd /usr/src
#make buildworld
#make buildkernel KERNCONF=GENERIC
#make installkernel KERNCONF=GENERIC
#make installworld
#mergemaster
#reboot

Twitter is already used by more and more people are community tools, you can update your status through any very simple way right now, whether the use of mobile phones, blog messages can update your twitter status anytime, anywhere.
While Twitter has been very pupular, but there are still many people do not know how to be embedded into the blog in Twitter, so that we can see a few of your up-to-date status, Twitter widget is one of these update status tools that has been provided by the official website, it can offer embedded into code to support many types of blogs, but many people may not know how to find from the official website of the widget, so I have to write the installation steps for your reference.

1. First please go the the Twitter official website http://twitter.com/ and then login your account. When you login, please click on the bottom of the Goodies link.

It did not show any error message or the database can not be used, when i upgrade Wordpress before, but when i would like to change the content of my.cnf to optimize the mysql, it seems that has become very difficult. Why do I have to say so? That is because i can access and enable mysql after I changed my.cnf file.
However, the error message "back to gallery" sudden appeared in the web page when I would like to visit the picture, at this time through phpmyadmin into the database query gallery you'll find all the relevant database table will have problems, there is a general error message "1033: Incorrect information in file".
As a result of wordpress and gallery2 through the combination of wpg2, so when you query the settings wpg2 do not see any problems, you can only see the problem using browser to check picture or query the database table.
Finally, i know the problem caused by changed in the content of my.cnf that is through query the google search engine, you will see the discuss this issue as it relates to the below forum information.

http://gallery.menalto.com/node/79545

# 1. Stop mysql service and then delete all ib_logfile * files, and then start mysql service.

Results: invalid

# 2. Rebuild all of your database table such as g2_CustomFieldMap.frm.

Results: I have never try it.

# 3. Restore original My.cnf file.

Results: Successful

Are you still try to find social tools for your blogger? I believe there are many sites use free space has the same problem, whether it is of unknown station myspace or MSN or google's blogger ... and so on, everyone can only use existing templates, but can not use many function and the js or php syntax, although the use of these free Web site services have been able to meet the needs of most people, but in this information age, if you can not share the article through the Blog social tool, you will not be better than others, and when you know there are many blog software can easily add these features, you will be annoyed not to use these useful functions and begin to thinking why i need to use blogger service.
I wrote the purpose of this article is to help you easy to use StumbleUpon social tool in google blogger.
StumbleUpon is one of these social tools that provided a way to add button in blogger for share article.
Please refer to the following steps to add it right now.

1. You can click # StumbleUpon Buttonson in the bottom of StumbleUpon Home page to enter StumbleUpon Buttons & Tools page.



http://www.stumbleupon.com/buttons.php

2. Follow stumbleupon steps

• Pick a Graphic -- choose button icon what you want
  


• Select Your Site -- select your blog service provider
  


• Get Code -- get embedded code for your blog

3. The button will be displayed in the bottom of each article after pasted code in your blogger HTML.

Actually, if you have a new blog, you shall want to register it in all search engines such as google, yahoo, msn and so on..., However, the Microsoft search engine "Bing" coming out recently, you should go here and then register for your blog! Otherwise your blog is very difficult to appear in the bing engine, so please go to the following link and then register your blog right now.

1. Browse the following link and then select sign in to use the tools
http://www.bing.com/webmaster/

2. Use your Windows Live ID to login and then add a site

I am glad to finally be able to find a solution to combination of Exchange Server 2000 to the Thunderbird mail client program.
I had to be almost using Exchange Server all of the many past companies, and verify the staff account through the Active Directory Server, so i need to use windows environment to work each time that is because Linux can login AD while the domain, but not be able to use the company address book of Exchange, so no matter what Linux software is able to replace the Windows, but I still could not solve this Problems.
Fortunately, today I would like to finally come out. Actually, that is a very simple setting and it does not require administrator privileges, you just need the domain user permission.
If you want to know how to configure, please follow these steps:

1. Click Tool -> Address Book of thunderbird

2. Click File -> New -> LDAP Directory in Address Book

3. Fill information in the General tab of Directory Server Properties

Name: any
Hostname: LDAP ip address
Base DN: your domain name example: DC= YAHOO,DC=COM
Port number: 389
Bind DN: Domain\Account example: YAHOO\bryan

4. It will ask you to fill password for domain account when you open thunderbird again.