bluetooth in slackware 13.1

Published by:

It’s already there. The program in slackware.

Plug the device, the blueman-service will start. And we can use it right away.

But I got problem here. The blueman-service didn’t executed.

scanning device remote through terminal
#hcitool scan

So make sure /etc/rc.d/rc.bluetooth is executable.
chmod +x /etc/rc.d/rc.bluetooth

Pair the device through the handphone first. then the pc. now i can send the file from nokia to my pc, but not everytime the error message most of the time were come out. Here is the message in dmesg : hci0 command tx timeout.

In my case, I have to put the handphone inline with the bluetooth adapter.
Give it a try.

Manage Formula in Open Office

Published by:

Sometime I m using lots of formulas in my open office file. Especially in spreadsheet. But i don’t know why it doesn’t work out sometime. Some guy in a forum said it is some kind of bug but in another forum wrote about changing the option in the tool.

I believe the second one is most reliable. Like today, I m using countif(range;criteria) in my calc file.
That’s mean I want to count how many data that contains the word Guru in front of each text.

It returns zero or nothing. But the data show that at least 30 row of data containing Guru.

Then I go to Tools Option – Calc – Calculate.
Check list the option Search Criteria = and <> must apply to whole cells and Enable regular expressions in formulae

That’s two option gonna make my countif formulae worked.

virtualbox engine accessing to usb

Published by:

Since the beginning that I knew virtualbox, I wonder how this engine access to my usb stick directly without moving the content to the host first. Actually there is a way how we can do that.

First, add the user to vboxusers group. Use kuser or nano /etc/group in the terminal.
Now open the virtualbox, click usb in the setting area. But don’t run the virtual machine yet. Set the  necessary setting in the usb dialog box, then save.

Now start the virtual machine, you will find the usb in the drive section.
I do this to windows virtual machine.

lock ubuntu screen from terminal

Published by:

For locking the screen in ubuntu we don’t have to wait the screensaver to active, I prefer to activate manually, even I have to open the terminal windows first. I feel much better to control the locking.

here is the command
#gnome-screensaver-command –lock

source : here.

upgrading slackware 13.1 to 13.37

Published by:

Here are the instructions of upgrading slackware according to slacwkare tutorial.
1. Open your terminal (start – system – terminal)  type init 1 to change the environment to  single user mode
$init 1
2. Login as root
3. Upgrade the main installation which is

upgradepkg /root/slackware/a/pkgtools-*.tgz
upgradepkg /root/slackware/a/tar-*.tgz
upgradepkg /root/slackware/a/xz-*.tgz
upgradepkg /root/slackware/a/findutils-*.txz
upgradepkg /root/slackware/a/glibc-solibs-*.t?z

4. Now install everything

upgradepkg --install-new /root/slackware/*/*.t?z

or if you want to miss the KDEI language package, just run the script which contains :

    for dir in a ap d e f k kde l n t tcl x xap y ; do
      ( cd $dir ; upgradepkg --install-new *.t?z )

5. remove old packages. The easy one is take a look into /var/log/package

 ls -lt | less

6. do the script

removepkg util-linux-ng guidance-power-manager eggdbus iptraf \
      libXTrap libXprintAppUtil libXprintUtil libxkbui rstart trapproto \
      xf86rushproto xfindproxy xfwp xplsprinters xprehashprinterlist \
      xproxymanagementprotocol xsetmode xsetpointer xtrap 

    Note the removal of util-linux-ng!  You better make sure that the
    renamed util-linux package is installed before removing that.

7.  Fix the config file. There is also a script for that. It will rename the extension new config file to the regular file by copy the old one into bak file.

     cd /etc
     find . -name "*.new" | while read configfile ; do
       if [ ! "$configfile" = "./rc.d/" \
         -a ! "$configfile" = "./rc.d/" \
         -a ! "$configfile" = "./" \
         -a ! "$configfile" = "./" \
         -a ! "$configfile" = "./" ]; then
         cp -a $(echo $configfile | rev | cut -f 2- -d . | rev) \
           $(echo $configfile | rev | cut -f 2- -d . | rev).bak 2> /dev/null
         mv $configfile $(echo $configfile | rev | cut -f 2- -d . | rev)

8.  Make sure the /etc/lilo.conf is contain the right path. Or do this command to make sure the lilo installed to the MBR.

9. back to init 3 and reboot

It should work.

stop dhcpcd client in slackware

Published by:

If we use dhcp (dynamic host configuration protocol) in our slackware then the machine automatically getting the ip from the server and use it.
The program that run this function is dhcpcd.
But sometime when we decide to use static ip and configure it in /etc/rc.d/rc.inet1.conf
the static setting won’t work. It is because the dhcpcd still running in memory.

So we need to shut it down. here’s how.
root@user:#/sbin/dhcpcd -x eth0

Now try to restart rc.inet1.conf again
root@user:#/etc/rc.d/rc.inet1 restart

The machine should use the static ip now.

samba security = share and user

Published by:

Samba is one of the transfer protocol in linux network. Samba can connect linux data server with windows. In my opinion, the setting is quite easy. In my earlier posts I have written many posts about samba. Now in the samba setting there is another option that can make a different to the sharing method. The option is security = user and security = share.

Let’s talk about security share option.
If we use this option in smb.conf then every sharing directory declared in smb.conf will be share without any username privileged.
But the sharing setting must be set browseable=yes ; rewritable=yes ; guest ok = yes

Now the security user option.
If we use this option in smb.conf then everytime the client try to browse the share directoy it will prompt for username and password of the owner directory.
The sharing setting must be set browseable=yes ; rewriteable = yes ; guest ok is not really necessary.

In My opinion the samba security = share is faster than security=user, but why?
I think this is because share is ignoring all the privileged.

fix flash mbr

Published by:

Sometime our flash usb drive is error without knowing the cause. The master boot record (MBR) is damaged or corrupted.

We can recover the mbr by copying the mbr.bin available in slackware directory into the flash drive. This is amazing isn’t it. Slackware keep mbr record inside its original installation.

This is how to copy the mbr.bin to the flash. Sdb1 is the flashdrive node recognition by slackware, the location in my slackware 13.1 is in /usr/share/syslinux/mbr.bin

dd if=/usr/share/syslinux/mbr.bin of=/dev/sdb1

504 Gateway Timeout

Published by:

I received the 504 error gateway timeout without knowing what is going on. Maybe because I create too many sub domains with plugins installed or what.

Here are the explanation from source :

HTTP Error 504 - Gateway Timeout"

The 504 Gateway Timeout error displays inside the Internet browser window, just as web pages do.
Cause of 504 Errors
The 504 Gateway Timeout error is an HTTP status code that means that one server did not receive a timely response from another server that it was accessing while attempting to load the web page or fill another request by the browser.

This usually means that the other server is down or not working properly.
The 504 Gateway Timeout error is usually a network error between servers on the Internet or an issue with an actual server, meaning the problem is not with your PC or Internet connection.

Even though the issue is not yours to troubleshoot or resolve, there are a few things you can do:

Retry the web page by clicking the refresh/reload button or trying the URL from the address bar again. Even though the 504 Gateway Timeout error is reporting an error outside of your control, the error may only be temporary.

Trying the page again will often be successful.

Come back later. Since the 504 Gateway Timeout error message is an issue with the web site's network or a server that it communicates with, everyone visiting this site is probably experiencing the same problem as you.

Chances are an issue like that has already been brought to the attention of an administrator at the web site and someone is working to resolve it.

If you can't wait any longer for the problem to be resolved or if you'd like to help out, you may want to attempt to contact the webmaster or another website contact yourself and advise them of the 504 Gateway Timeout error you are receiving.

So it could not because of sub domains. But I already delete some of them. hmh….

barcode generator from open office

Published by:

Open office has a plugin for printing barcode directly from it. Barcode is necessary to print id’s for products or items that we need in our store or something.

just install the extention barcode 1.3.1 (the current version) or download it here.

To install it, go to Tools – Extension Manager – Add. Choose the plugin we saved before.

Then use office draw, go to insert and barcode. This barcode plugin is only show in draw menu anyway. Not in writer or calc. So don’t confuse about it.