Selecting a good Channel for your WiFI, or how to find the WiFi spectrum around you.

why my wifi router in channel 6 is not working properly?..... well seems obvious

root@debian:/home/pablo# iwlist scan | grep Channel
                    Frequency:2.417 GHz (Channel 2)
                    Frequency:2.417 GHz (Channel 2)
                    Frequency:2.412 GHz (Channel 1)
                    Frequency:2.412 GHz (Channel 1)
                    Frequency:2.422 GHz (Channel 3)
                    Frequency:2.422 GHz (Channel 3)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.462 GHz (Channel 11)
                    Frequency:2.462 GHz (Channel 11)
                    Frequency:2.412 GHz (Channel 1)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.442 GHz (Channel 7)
                    Frequency:2.442 GHz (Channel 7)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.412 GHz (Channel 1)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.412 GHz (Channel 1)

I know that there are nice applications to see the the WiFi stations but this is something quick when you don't have the X's started (I like Arch sometimes and my debian without Xs in very old laptops)

root@debian:/home/pablo# iwlist scan | grep "ESSID\|Channel"| \
 perl -lane '($essid)=/ESSID:(.+)/; ($channel)= <>=~/Channel (\d+)/; \
 push @{$h{$channel}}, $essid;  END {print "Chnl\tcount\tESSIDs"; \
foreach (sort {$a<=>$b} keys %h){ $cnt=@{$h{$_}}; \
 print "$_\t[$cnt]\t @{$h{$_}}"}}'

Chnl count ESSIDs
1 [4]  "SKYC4E76" "TALKTALK-431FCD" "SISJ_Net" "virgin broadband"
3 [2]  "FON_ab" "my_place_ab"
6 [8]  "BTHomeHub2-2RQK" "BTOpenzone-H" "BTFON" "SKY8430D" "SKY74103" "ZyXEL_3340ras" "BTHomeHub2-MWCS" "VirginMedia8791617"
7 [1]  "BTOpenzone-H"
11 [2]  "BTHomeHub2-349C" "SKY97946"

A Sampling of Linux Desktops/Window Managers

Copied from Linux Journal

The Second-String Desktop

Mar 31, 2011  By Shawn Powers

http://www.linuxjournal.com/article/10946?page=0,2

Table 1. A Sampling of Linux Desktops/Window Managers

Desktop/Window Manager	Description	Design Goals	Based On	Advantages	Disadvantages
KDE	Full desktop environment	Full system integration, including applications	Uses KWin window manager and Qt libraries	Great application integration, highly customizable	Distinct look; non-KDE apps often seem awkward
GNOME	Full desktop environment	Full system integration, including applications	Uses Metacity window manager, based on GTK+ libraries	Wide variety of native applications, wide adoption in corporate environments	Non-GTK apps often look odd and use more RAM
LXDE	Lightweight desktop environment	Speed and beautiful interface	Uses Openbox window manager and GTK+ libraries	Works well on older/slower hardware, maintains compatibility	Lacks some of the features found in GNOME or KDE
XFCE	Lightweight desktop environment	Full-featured desktop environment, but light on resources	Usually uses XFWM4, but works well with other window managers	Somewhat lower system requirements than GNOME or KDE	Possibly a bit too resource-hungry for low-end systems
Enlightenment E17	Window manager with the features of a desktop manager	Speed and eye candy with integrated functionality	A window manager plus a set of libraries for developing apps	Fast without sacrificing style	Still in beta but quite stable
ROX Desktop	Desktop manager based on the ROX-Filer	Approaches the OS in a file-centric way	ROX-Filer file manager and the OroboBox window manager	Unique file-based design makes installing apps drag and drop	ROX Desktop is either a love or hate affair
IceWM	Hybrid window manager and desktop manager	Speed and simplicity	Simple menu and taskbar design	Fast and easy to make system-wide configuration changes	No way to make desktop icons, requires additional software for some features
Blackbox/Fluxbox	Very minimalistic window managers	Speed and small memory/CPU footprint	Fluxbox is based on Blackbox (it's a fork)	Blazingly fast	Very limited in features, but by design not immaturity
Openbox	Very minimalistic window manager	Speed and small memory/CPU footprint	Originally based on Blackbox, original code since version 3.0	Simple and fast	Limited in features by design
AfterStep/Window Maker	Clones of the NeXTSTEP interface	Functions and looks like NeXTSTEP	Designed after the unique design of the NeXTSTEP interface	Unique	Often difficult to configure, and the interface is an acquired taste
Ratpoison	A window manager that doesn't require a mouse	Kills the need for a mouse	Designed after GNU Screen	No need for a mouse	Very limited in features, which the developers consider a feature
DWM	An extremely minimalist window manager	Manages windows and nothing more	The ideas of other minimalist window managers	Small and fast	No configuration files, must edit source code to coconfigure

Resources

AfterStep: www.afterstep.org
Blackbox: blackboxwm.sourceforge.net
CrunchBang Linux: www.crunchbanglinux.org
DWM: dwm.suckless.org
Elive: www.elivecd.org
Enlightenment E17: www.enlightenment.org
Fluxbox: www.fluxbox.org
GNOME: www.gnome.org
IceWM: www.icewm.org
KDE: www.kde.org
Lubuntu: www.lubuntu.net
LXDE: www.lxde.org
Macbuntu: macbuntu.sourceforge.net
Openbox: www.openbox.org
Puppy Linux: www.puppylinux.org
Ratpoison: www.nongnu.org/ratpoison
ROX Desktop: roscidus.com/desktop
Ubuntu: www.ubuntu.com
Window Maker: www.windowmaker.org
XFCE: www.xfce.org
Xubuntu: www.xubuntu.org

How to know your debian/ubuntu version and architecture

Which Ubuntu version do you have?

$ cat /etc/issue
Ubuntu 9.04


Which debia?

$ cat /etc/debian_version
5.0


Take all the info of your linux installation:

In a 32 bits:
$ uname -a
Linux pmg-linux 2.6.28-18-generic #60-Ubuntu SMP Fri Mar 12 04:40:52 UTC 2010 i686 GNU/Linux


If your architecture is 64 bits you should see the "x86_64"

$ uname -a
Linux pmg64_linux 2.6.26-2-amd64 #1 SMP Thu Nov 5 02:23:12 UTC 2009 x86_64 GNU/Linux


Another way of taking info:

$ cat /proc/version
Linux version 2.6.28-18-generic (buildd@rothera) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #60-Ubuntu SMP Fri Mar 12 04:40:52 UTC 2010


linux sound

I had no sound with fluxbox in the speakers. This was a good thing. This has given me the opportunity of rediscovering the text GUI for alsamixer.

Definitively I like text GUI they are clever and conceptually more challenging to create than the graphical GUI.

I think that an only-text environment is the final step in the evolution of GUI for power users. Screen multiplexer, emacs -nw, miriads of keybindings for the windowmanager. If I ever remember again how to copy paste between virtual displays I will start to use runlevel 3 again and achieve the nirvana ;-).