Petr’s blog about Linux

I decide to create hotspot from my server to allow other connect to Internet for free. I used “Captive portal” solution based on these applications: CoovaChilli FreeRadius MySQL daloRADIUS When somebody wants to connect to Internet using my wifi, the first page he can see is the register/login page (whatever page he wants to visit). [...]

I got 16 GB USB flash from my brother, because he can’t see me still using my old 64 MB. He decided to buy Imation Nano-Flash-Drive. Because of many of my friends and colleagues are using Win, I use NTFS on it. Old FAT is not “usable” in these days, because it can’t handle bigger [...]

One day I checked dmesg from one of my servers and I saw I/O errors gate:~ dmesg … [ 4220.798665] ide: failed opcode was: unknown                                                     [ 4220.798665] end_request: I/O [...]

I need to connect to the Oracle database in my work to get some data from it. I’m not the Oracle expert, but I decided to use DBD::Oracle. Most of the manuals and how-to pages describe, how to install client libraries to system (usually as root), which was not my case. I just need one [...]

I have problem with Java Webstart applications, which are using IPv6 by default. Because I’m not using IPv6 at all I decide to disable this protocol completely. There are many pages how to disable ipv6 under Debian, but most of them was not working for me. The most easiest work well: Modify /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1" Don’t [...]