Beyond Cycle

[lissomort-blog]

Change Emacs font (size, family, etc.)

If you want to change the emacs font (Linux tip only) - start utility

xfontsel

chose, that you want, and paste the string that you got into your emacs init file (.emacs for example):

(set-default-font "-misc-fixed---normal--14-*-75-75-c-70-iso8859-16")

[lissomort-blog]

Python objects to JSON string. Serialization magic

Thanks dude, for this post. http://h3manth.com/content/python-objects-json-string

[lissomort-blog]

Beyond Cycle turned 3 today!

[lissomort-blog]

Centos. WPA2 Wireless

Life with Centos

Introduction

Once upon a time my OS's crashed. I cast the spell "google" to find next victim for my laptop OS. Choose CentOS. Step by step install CentOS, and describe problems that I found in my way.

Wireless. WPA2 network setup

First we need to install wireless-tools and other tools we need for encryption and so on.

yum install wireless_tools wpa_supplicant dbus

For example, my wireless inteface is wlan0. Edit the ifcfg-wlan0 file.

<etc/sysconfig/network-scripts/ifcfg-wlan0

DEVICE=wlan0

HWADDR=

TYPE=Wireless

UUID=

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=dhcp

PEERDNS=yes

USERCTL=yes

NETWORKING_IPV6=no

ESSID=

CHANNEL=

MODE=Managed

RATE=Auto

Now we need to edit wpa_supplicant configs.

/etc/sysconfig/wpa_supplicant

INTERFACES="-iwlan0"

DRIVERS="-Dwext" (or we can use -Dn180211)

OTHER_ARGS="-u -f /var/log/wpa_supplicant.log -P /var/run/wpa_supplicant.pid"

Using wpa_passphrase utility create base wpa_supplicant conf.

wpa_passphrase >> /etc/wpa_supplicant/wpa_supplicant.conf

And in result: /etc/wpa_supplicant/wpa_supplicant.conf

ctrl_interface=/var/run/wpa_supplicant ctrl_interface_group=wheel

network={ ssid="MyESSID" scan_ssid=1 key_mgmt=WPA-PSK #psk="" psk=843f314c3357dd62e8f1865fa8d6a06918e26c0e7bdc0b4208b49d975333fce }

In the end of configuration we need to put this services into boot.

> chkconfig messagebus on > chkconfig wpa_supplicant on > echo "ifup wlan0" >> /etc/rc.local

Testing:

> service messagebus start > service wpa_supplicant start > ifup wlan0

Done.)

[lissomort-blog]

Python & Unicode

For me, as for russian-speaking developer, working with Unicode object in Python (ver ~2.7) it's something terrible. Every time when I meet unicode in project, I should make some magic to work it well. Here is some of last spells:

import locale output_encoding = locale.getdefaultlocale() print txt.encode(output_encoding)

[lissomort-blog]

VPN. Gentoo way

Set the VPN connection to our university network for access for some services and data.

First of all, read this manual, and find out that we need some packages. From this manual I took only packages. Than create, if its doesn't exist, file /etc/ppp/peers/ksu (ksu - name of our university, u can use whatever you want). Put its in file:

pty "pptp vpn.yourserver.com --nolaunchpppd" name username password "userpass" file /etc/ppp/options.ksu

In file /etc/ppp/options.ksu put:

lock noauth refuse-eap nobsdcomp nodeflate

require-mppe-128

Now add lines in our /etc/conf.d/net file:

link_ppp0="pty 'vpn.yourserver.com --nolaunchppd'" pppd_ppp0=( "persist" "call prov" "holdoff 10" "idle 600" "defaultroute" ) depend_ppp0() { need net.wlan0 }

Add symlink to ppp0 and add it to startup.

ln -s /etc/init.d/net.lo /etc/init.d/net.ppp0 update-rc add net.ppp0 default

Now we have the vpn-connection every start of system. Also I need to create some routes. Add file to /etc/ppp/ip-up.d/ and add this:

route add -net x.x.x.x/y dev ppp0

Where x.x.x.x/y - our network with port.

[lissomort-blog]

Gentoo. Installing Xorg with Intel graphic card. Correction

At last I have the working version of Gentoo with Intel drivers for Xorg. Vesa driver, as I wrote in my previous post give you possibility to start Xorg with virtual driver, disable the Intel driver. That created the problem of wide-screnn resolution. So I return back, kill the vesa driver, create xorg.conf:

Section "ServerLayout" Identifier "X.org Configured" Screen 0 "DefaultScreen" 0 0 InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Files" ModulePath "/usr/lib/xorg/modules" FontPath "/usr/share/fonts/misc" FontPath "/usr/share/fonts/100dpi:unscaled" FontPath "/usr/share/fonts/75dpi:unscaled" FontPath "/usr/share/fonts/TTF" FontPath "/usr/share/fonts/Type1" EndSection Section "Module" Load "dri" Load "extmod" Load "glx" Load "xtrap" Load "dbe" Load "freetype" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5 6 7" EndSection Section "Monitor" #DisplaySize 330 210 # mm Identifier "DefaultMonitor" VendorName "LEN" Option "PreferredMode" "1280x800" ModelName "4050" Option "DPMS" UseModes "Modes[0]" EndSection Section "Modes" Identifier "Modes[0]" Modeline "1280x800" 83.46 1280 1344 1480 1680 800 801 804 828 Modeline "1280x800" 69.75 1280 1328 1360 1440 800 803 809 823 +HSync -Vsync EndSection Section "Device" ### Available Driver options are:- ### Values: : integer, : float, : "True"/"False", ### : "String", : " Hz/kHz/MHz" ### [arg]: arg optional #Option "NoAccel" # [] #Option "SWcursor" # [] #Option "ColorKey" # #Option "CacheLines" # #Option "Dac6Bit" # [] #Option "DRI" # [] #Option "NoDDC" # [] #Option "ShowCache" # [] #Option "XvMCSurfaces" # #Option "PageFlip" # [] Identifier "IntelCard" Driver "intel" VendorName "Intel Corporation" BoardName "Mobile 4 Series Chipset Integrated Graphics Controller" BusID "PCI:0:2:0" EndSection Section "Screen" Identifier "DefaultScreen" Device "IntelCard" Monitor "DefaultMonitor" SubSection "Display" Viewport 0 0 Depth 1 EndSubSection SubSection "Display" Viewport 0 0 Depth 4 EndSubSection SubSection "Display" Viewport 0 0 Depth 8 EndSubSection SubSection "Display" Viewport 0 0 Depth 15 EndSubSection SubSection "Display" Viewport 0 0 Depth 16 EndSubSection SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection

than add some flags in my kernel (flag for framebuffer support, and flag with multimedia support). And of course - reboot.

And Xorg started with Intel drivers and with widescreen resolution.

[alexmerser]

[lissomort-blog]

Gentoo. Ntfs partitions

To mount and simple use the Ntfs partitions (such as Windows partition), just emerge the "ntfs3g" package.

emerge -av ntfs3g

Or if it doesn't help, try this 

[lissomort-blog]

Gentoo. Installing Xorg with Intel graphic card

First time I installed Gentoo, I had a huge problem with this question. Now I have a little manual for myself. I added a few steps from the previous message

1. Include KMS flags in kernel 2. emerge xorg-drivers 3. echo "x11-base/xorg-server udev" >> /etc/portage/package.use (make sure that flag "udev" is in USE flags) 4. emerge xorg-server 5. emerge vesa 6. emerge twm xterm 7. env-update 8. reboot

You don't need create the xorg.conf file. 

UPDATE. This way give you possibility to start Xorg with vesa (virtual) driver.  Read next post for more information about Intel drivers.

[lissomort-blog]

Gentoo. Again

Install the Gentoo OS, again. But this time I have three OS's on my laptop - Win7 (for students tasks), Ubuntu 12.04 (for work) and Gentoo (for experiments and for piece of fun). I will write down my action that I do when I install Gentoo.

1. First of all I installed the minimal Gentoo by the official guide.

2. While installing Gentoo I use wi-fi. So I need wi-fi setup. I used the wpa_supplicant. This is my settings for my network.

# /etc/wpa_supplicant/wpa_supplicant.conf ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=wheel network={ ssid="YourSSID" psk="your-secret-key" scan_ssid=1 proto=WPA2 key_mgmt=WPA-PSK group=CCMP TKIP pairwise=CCMP TKIP priority=5 }

Then just start wpa_supplicant as service.

2. After installing minimal Gentoo, next I need - X server. Its the most hard thing in my installation. Installing X Server with this steps: set necessary USE flags. Then check the necessary kernel setting (for each graphics drivers in can be different - check in google). After all checks emerge the xorg-drivers and next libraries: mesa, cairo, xf86-video-intel, libva, libdrm.

3. DELETE the xorg.conf if you exist it by "Xorg -configure" (its only for INTEL, its don't need xorg.conf)

4.emerge vesa

5. startx

6. Install desktop environment.

[lissomort-blog]

Mongo vs MySQL - reality

Changed my project and released it in version 0.01a ) Now my project uses mongoDB data storage. For using Mongo with Lisp I use mongo-cl-driver library. Now in nearest future planing to create registration via activation email. Tested for this cl-smtp libary, its avaliable through the Quicklisp loader. Simple example can be found here.

[lissomort-blog]

Talk is cheap. Show me the code

Linus Torvalds

[lissomort-blog]

MongoDB vs MySQL

There was an idea to change the database in my project on NoSQL databases like MongoDB. So I started to explore this new idea for me to keep data in schemeless structure.

[lissomort-blog]

Scala time

Found some interesting course about functional programming. Started to learn Scala.

https://class.coursera.org/progfun-2012-001/lecture/index

[lissomort-blog]

Gentoo installation. Personal experience

1. lspci -v Looking for wi-fi card. I need "iwlagn" driver. 2. modprobe -r iwlagn; modprobe iwlagn 3. ifconfig wlan0 up 4. net-setup wlan0 Prepare disk: 5. fdisk /dev/sda 7. mkfs.ext2 /dev/sda1 -L boot 8. mkfs.ext3 /dev/sda3 -L root 9. mkswap /dev/sda2 10. swapon /dev/sda2 Mount partitions: 11. mount /dev/sda3 /mnt/gentoo 12. mkdir /mnt/gentoo/boot 13. mount /dev/sda1 /mnt/gentoo/boot 14. date MMDDhhmmYYYY 15. cd /mnt/gentoo Get stage: 16. links http://www.gentoo.org/main/en/mirrors.xml 17. tar xvjpf stage* 18. links http://www.gentoo.org/main/en/mirrors.xml 19. tar xvjpf /mnt/gentoo/portage* -C /mnt/gentoo/usr 20. mirrorselect -i -o >> /mnt/gentoo/etc/make.conf 21. cp -L /etc/resolv.conf /mnt/gentoo/etc 22. mount -t proc none /mnt/gentoo/proc 23. mount -o bind dev /mnt/gentoo/dev 24. chroot /mnt/gentoo /bin/bash 25. env-update 26. source /etc/profile 27. export PS1="(chroot) $PS1" 28. emerge --sync 29. edit make.conf USE = "-gtk -gnome -qt -kde dvd alsa cdr unicode -X" 30. nano -w /etc/locale.gen ru_RU.UTF-8 UTF-8 31. locale-gen 32. cp /usr/share/zoneinfo/Europe/Kiev /etc/localtime 33. emerge gentoo-source 34. emerge genkernel 35. genkernel all 36. emerge udev syslog-ng vixie-cron dhcpcd grub 37. rc-update add udev boot 38. nano -w /etc/fstab 39. passwd "mygeniuspassword" 40. nano -w /etc/rc.conf UNICODE="yes" 41. nano -w /etc/conf.d/keymaps KEY_MP="ru-ms" 42. nano -w /etc/clock CLOCK = "local" TIMEZONE = "Europe/Kiev" 43. rc-update add syslog-ng default vixie-cron 44. nano -w /etc/grub/grub.conf line with "KERNEL" root = /dev/ram real_root=/dev/sda3 vga=0x318 45. grep -i rootfs /proc/mounts > /etc/mtab 46. grub-install /dev/sda 47. exit 48. reboot

And pray.

If you have Windows 7. Add to grub.conf:

title Windows must die

rootnoverify(hd0,3) (if your Windows on sda4)

makeactive

chainloader +1

[lissomort-blog]

Crash your mind )))))