Just staring using wavecom M1206 modem to my centos linux, I  just follow common instruction from the net, weird after couple hour my modem still not detected, this first time I use modem on linux. I plug my modem to my server (IBM X3250) check the dmesg and found the modem detected on ttyUSB0


usb 2-1.6: new full speed USB device using ehci_hcd and address 4
usb 2-1.6: configuration #1 chosen from 1 choice
usbcore: registered new driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
usbcore: registered new driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core
drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303
pl2303 2-1.6:1.0: pl2303 converter detected
usb 2-1.6: pl2303 converter now attached to ttyUSB0

I made simple gammurc file on my root directory, .gammurc on paste simple configuration I got from the net


[gammu]
port = /dev/ttyUSB0
connection = at115200


Just like that, three line configuration, the I try to detect my modem using #gammu –identify and always got

Error opening device, it doesn't exist.

That’s make me frustrated for nearly 3 hour After check and re-check my very-very simple configuration I realize that I had mistake . There a “space” character after /dev/ttyUSB0 and that’s why my modem not detected. I remove the space, run #gammu –identify and whoaala , my modem detected

Manufacturer         : Wavecom
Model                : unknown (MULTIBAND  900E  1800)
Firmware             : 641b09gg.Q2403A 1320676 061804 14:38
IMEI                 : 354056000366412
SIM IMSI             : 510890973242XXX


Today I found on a client computer that do web “upload” on my application (written using Codeigniter) show strange behavior. For uploading I user code igniter upload library. I only certain file type allowed to upload, one of file type is ZIP file. When I try upload I found that my file type is now allowed, I check my code and I saw ZIP file was allowed.

I decide to check MIME code generated by Firefox for ZIP file (on Upload library). Woala strange happen , I found ” on MIME type. For example, The MIME is “application/x-zip”, as usually Firefox generate only application/x-zip without ”

Further, I add string replacement for ” character on upload library to avoid it happen again.

Just try using WinSetupFromUSB to install win XP SP3 on HP 431 notebook. I just follow the standard instruction from
developer site, make copy of XP content to USB drive bla bla bla ….

After finish I set my boot priority to USB drive, heem there two stage install, the first stage run smoothly. Then the notebook need restart as windows XP standard procedure. We go to stage two, woooala … error happened

hal.dll file is missing after I choose stage 2, I try another option on stage two but it give same error message.

I decide to repeat the process from stage 1, I check my partition scheme, oopss. there 100M on first partition, so I was installed on 2nd partition that may not recognized ad driver C. I delete the first partition so this install is absolutely on driver C.

I assume , this USB XP can not installed drive except C drive (first partition)

For my personal note :p

drop_caches

Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free.

To free pagecache:

echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:

echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:

echo 3 > /proc/sys/vm/drop_caches

Source : http://www.linuxinsight.com/proc_sys_vm_drop_caches.html

I just try new version of yahoo messenger, after couple minute try, I feel not comfortable with it, the response very rather my old version. Then I decide to uninstall it and re-install my old version.

After the old install, I lost my yahoo preference. My favourite silly preference is display yahoo messenger name every time I did enter/send message. The default preference only display my Yahoo ID on first message.

I have search on Yahoo Messenger setting and found nothing. Then after couple minute browsing, I found way to change the setting. I use CTRL+SHIFT+ 0 / 1 / 2

Finally my favourite silly setting is back hahahhahah

Recently I need dump some data from my database, since I am not the developer of the application I have to study first about data structure. I found the application use “view” , actually I have no experience with view

I did export using phpMyAdmin as usual, I did export view as regular table, and export it to SQL file. After review the SQL file result, I found the SQL file was not as I expected

Finally I found the way how to export data, I change the export output to “CSV” not SQL and the method work fine hahahhaha

Recently, I build hotspot system with single Freeradius server on Linux. the NAS is 3 mikrotik Access Point and 1 Mikrotik Ethernet. I followed step mentioned on the net, I am storing user session on MySQL table, uncomment for simultaneous SQL query check. I think I have fulfill all requirement, but I am still not get single simultaneous user work.

I tried login on different NAS / AP with same username and password and system still allow it. That make me frustrated for couple day. When I saw on radius log file, it always display :

Error: [sql] Failed to check the terminal server for user ‘xxxxxxx’

I am googling about above error and still not get solution. They say just check ‘client.conf’

Yesterday, I am review my configuration, especially on client.conf. Here sample part of my client conf

client 192.168.x.x {
secret = xxxxxx
shortname = hs-d
nastype = Mikrotik
}

I think, the nastype caused the ” Failed to check the terminal server for user” then I comment the nastype

client 192.168.x.x {
secret = xxxxxx
shortname = hs-d
#nastype = Mikrotik
}

I restart the freeradius server, and try login on different NAS with same username, now it’s work the system now allow only single simultaneous user. I am happy with it

When T13 printer is turned on, the printer will do a track test, card ridge will move to the right and left. At that time, when card ridge can not reach the maximum point in the right or the left it will be considered as “general error”. Make sure no objects are blocking when card ridge track test.

If you have problem with uploading rar file using codeigniter upload class it because on mime file there’s no definition for rar file.

Open system/application/config/mime.php file and add RAR definition

‘rar’ => ‘application/rar’

(Note: I use Firefox 4, that config may not work on other browser because other browser may define MIME for rar fire differently.