Chit chat
=======
Highly disappointed to see people take my work especially pictures and use them for their own blog, without any payback.
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Cartoons:
But where do you connect the wires?
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Make up a to do list of your days activities. If that is easy for you then, you might be a programmer.
Path to programming.
- Know a subject that gives you reason to program
- Learn logic
- Learn the syntax of a possible language that looks interesting
- Apply practical examples till you feel comfortable.
- Learn to debug.
- Work as a maintenance programmer.
- Develop a plan for the program you want to write
and describe in detail what is to be done (see below),
- Code in manageble segments via modules.
- Test and redo the program as needed.
Pseudo coding makes life easier.
Dump web page as ascii (text) to disk file.
Read disk file one line at a time in, but ignore all lines till you get what is needed.
Now continue reading one line at a time, but ignore certain lines
With the line you read in output what is needed, while editing out unwanted characters.
Stop output when you get to a point nothing else is needed.
Finnish reading file one line at a time.
End.
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Giving out the super secret code for doing the Kitt light show on the X86. Do not have a guitar anymore, but that was me playing the guitar.
http://www.youtube.com/watch?v=BlCHGiG_CQM
Think this is the secret code in freebasic for lighting the leds.
dim tim as double
tim = TIMER
duration = .3
out 888, 0
for y = 1 to 20
‘rem up
for x = 0 to 6
out 888, 2^x
r= inp(888)
out 888, (2^(x+1) +r)
tim = TIMER
DO
LOOP UNTIL (TIMER – tim + 86400) – (INT((TIMER – tim + 86400) / 86400) * 86400) > duration
out 888, 0
next x
‘rem down
for b = 1 to 7
z = 7 – b
out 888, 2^z
r= inp(888)
out 888, (2^(z+1) +r)
tim = TIMER
DO
LOOP UNTIL (TIMER – tim + 86400) – (INT((TIMER – tim + 86400) / 86400) * 86400) > duration
out 888, 0
next b
next y
‘rem end of sequence
out 888,0
rnd.bas
randomize 88888888
dim duration as double
dim tim as double
tim = TIMER
duration = .1
out 888, 0
for y = 1 to 100
out 888, 2^(abs((rnd(1)*8)))
tim = Timer
DO
LOOP UNTIL (TIMER – tim + 86400) – (INT((TIMER – tim + 86400) / 86400) * 86400) > duration
out 888, 0
next y
Circuit
Decided to take my score scraping script and apply it to other media. Per se maybe we just want the headlines of CNN.com. Used essentially the same set of instructions on a local news site with results. You will want to use the same rough logic or pseudocode:
Dump web page as ascii (text) to disk file.
Read disk file one line at a time in, but ignore all lines till you get what is needed.
Now continue reading one line at a time, but ignore certain lines
With the line you read in output what is needed, while editing out unwanted characters.
Stop output when you get to a point nothing else is needed.
Finnish reading file one line at a time.
End.
You might get results like this ignoring equals signs.
=========
THE LATEST
* Source: Joan Rivers’ doc took selfie
* Freak accident kills hero bus
driver
* IOS 8 is live: How to get it
* Five iOS 8 features you’ll love
* NEW Billionaire tells Apple: Innovate
* Obama stands firm: No ground troops
* Kerry heckled during testimony
* NEW Stocks hit record; thank Yellen
* NEW Panthers star takes leave
* Vikings: Peterson must stay away
* NEW Virus coming to a state near you
* Dowd inspires edible-pot campaign
* Wrongly convicted man gets a statue
* China blacks out CNN’s report
* He mistakenly calls 911, then …
* Surprise! Mendes, Gosling have baby
OPINION
…
…
===============
Then we can we can add it to our report.sh homemade newspaper. For details see:
http://computoman.blogspot.com/2013/12/create-your-own-newspages.html
#——————————————————–
# cnn
echo “<h3>CNN Headines</h3>” >> report.html
echo “<pre>” >> report.html
# creates cnn.txt
./cnn.sh > cnn.txt
echo “<pre>” >> report.html
cat cnn.txt >> report.html
echo “</pre>” >> report.html
#################################### # Cnn Headline Grabber # #=============================== # Assignments # -------------------------------- datafile="rawcnn.txt" let "flag = 0" # end assignments #================================= # # Get data file #--------------------------------- elinks -dump "www.cnn.com" > $datafile #================================= # # Extract and display data #--------------------------------- while read line do fdata[$a]=$line echo $line | grep -q "THE LATEST" if [ $? -eq 0 ]; then # header clear let "flag = 1" fi if [ $flag -eq 1 ]; then echo $line | grep -q "Weather" if [ $? -eq 0 ]; then let "flag = 0" else echo $line | grep -q "IMG" if [ $? -eq 0 ]; then let "response = donothing" else echo $line | sed 's/\[.*\]//' fi fi fi let "a += 1" done < $datafile # footer echo --------------------------------------------- echo #=================================== # End. ####################################
Assembly language is closer to what a computer understands and less like what a human would understand. but it is fast and compact. when assembled and linked vs a compiled higher level program. Assembly language version of Hello world:
section .data
hello: db 'Hello world!',10 ; 'Hello world!' plus a linefeed character
helloLen: equ $-hello ; Length of the 'Hello world!' string
; (I'll explain soon)
section .text
global _start
_start:
mov eax,4 ; The system call for write (sys_write)
mov ebx,1 ; File descriptor 1 - standard output
mov ecx,hello ; Put the offset of hello in ecx
mov edx,helloLen ; helloLen is a constant, so we don't need to say
; mov edx,[helloLen] to get it's actual value
int 80h ; Call the kernel
mov eax,1 ; The system call for exit (sys_exit)
mov ebx,0 ; Exit with return code of 0 (no error)
int 80h
or
No real lesson here except to expose you to how it looks. To make it a program where the preceding code was saved as hw.asm, you would:
$ nasm -f elf hw.asm
$ ld -s -o hw hw.o
$ ./hw
Hello world!
~$ ls -alh hw
-rwxrwxr-x 1 eddie eddie 360 Sep 19 02:09 hw
The same program in the C language with out comments that would really make it a larger program of source code.
#include <stdio.h>
main()
{
printf ("Hello world!\n");
}
Save file as “hello.c”. To make this program, you would:
$ gcc hw.c -o hw
$ ./hw
Hello world!
$ ls -alh hw
-rwxrwxr-x 1 eddie eddie 7.0K Sep 19 02:12 hw
The hw.c file creates a program file of 8298 ot less bytes. the hw.asm file creates a program file of 440 or less bytes. You can see that though the assembly program is a bit longer it generates a much smaller file. So assembly programs being all things are equal could save you up to ninety or more percent disk space. If you are renting storage, this could be a real money saver. Also the increase of speed in your system saves time and money also in other ways.
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Other examples of hello world:
Cobol (open-cobol using free form) Known for being wordy, but it is also self documenting.
IDENTIFICATION DIVISION. PROGRAM-ID. hello. PROCEDURE DIVISION. DISPLAY "Hello World!". STOP RUN.
Save file as “hello.cob”. To make this program, you would:
$ cobc -O -x -free hello.cob $ ./hello Hello, world!
or more primitive form (do not forget to skip seven spaces)
* Sample COBOL program
IDENTIFICATION DIVISION.
PROGRAM-ID. hello.
PROCEDURE DIVISION.
DISPLAY "Hello World!".
STOP RUN.
The compiler is cobc, which is executed as follows:
$ cobc -O -x hw.cob $ ./hello Hello World!
Basic (freebasic)
'rem start
print"Hello world!" end
Save file as “hello.bas”. To make this program, you would: $ fbc -lang qb hw.bas $ ./hw Hello world! Pascal (free pascal)
program Hello_World;
Begin
writeln('Hello World!')
End.
Save file as “hw.pas”. To make this program, you would: (ignore error) $ fpc hw.pas Free Pascal Compiler version 2.4.4-3.1 [2012/01/04] for i386 Copyright (c) 1993-2010 by Florian Klaempfl Target OS: Linux for i386 Compiling hw.pas Linking hw /usr/bin/ld: warning: link.res contains output sections; did you forget -T? 4 lines compiled, 0.2 sec $ ./hw Hello World! C++ (g++) New age version of C?
#include <iostream>
using namespace std;
//hello.cpp
int main()
{
cout << "Hello world!\n";
return 0;
}
Save file as “hello.cpp”. To make this program, you would:
$ g++ hw.cpp -o hw $ ./hw Hello world!
Java (javac java)
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World");
}
}
Save file as “HelloWorld.java”. To make this program, you would:
$ java HelloWorld
Hello, World
Python (interpreted)
print "Hello World!" exit()
$ python
Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
[GCC 4.4.3] on linux2
Type “help”, “copyright”, “credits” or “license” for more information.
>>> print “Hello World!”
Hello World!
>>> exit()
or
#!/usr/bin/python
# start
print “Hello World!”;
# end
Save file as “hw.py”. To make this program, you would:
$ python hw.py
Hello World!
Bash (interpreted)
$ printf "Hello world! \n";
$ echo Hello world!
Fortran (gfortran (do not forget to start at column 6))
program helloworld
print *,"Hello World!"
end program helloworld
Save file as “hw.for”. To make this program, you would:
$ gfortran hw.for $ ./hw Hello world!
Anyway, just some examples of “Hello world!” code to wet your appetite for programming. Notice any similarities/differences in all this. All the examples worked “as is” on linux with free software.
Whether you prefer a graphical user interface such as:
Where all you have to do is just double click a picture is so sexy and seems very easy. Let’s consider and alternative where all you have to do is just press a single key to start the program you want:
But then you could actually sort of do the same thing with an interface like this:
Oh but it is not as sexy some might say. It does exactly the same thing, but without using so many system resources. Not only that but you could get even more choices without having to redo the desktop. So if you pressed 1, you would get:
Or if you pressed 2 than you would get:
All this was done without any swiping! Of course that does not prevent you from using your favorite program such as a spreadsheet or whatever:
But then you could do sort of the same thing with a text based alternative like homeclc or sc:
With all the embedded devices such as the Raspberry Pi and the like, you will want to be as resource conscious as you can. Or to put it in another way, with all the impending issues in the world, what if computers, hand held devices and the like were stopped from being made? You still have to compute. What would you use? Those old systems in the closet do not look so bad now!?! Do not worry, computers will not be stop being made.
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A bit of code:
echo “************************”
echo “* Music programs *”
echo “************************”
echo “* [1] Autoharp *”
echo “* [2] Radio *”
echo “* *”
echo “* [0] Exit/Stop *”
echo “************************”
echo
echo “Enter your menu choice [1-2, or 0]: ”
read -n 1 yourch
case $yourch in
1) autoharp.sh ;;
2) radio.sh ;;
0) exit 0 ;;
*) echo “Oopps!!! Please select choice 1,2 or 0”
echo “Press Enter to continue. . .” ; read ;;
esac
done
Like to use my server as a stereo so to speak. Either can play sound files directly or can play music from the internet! For some reason the sound was not working on my system, so I decided to remove the pulse stuff and reinstall the alsa setup. This is the only method that I have found that works flawlessly:
$ sudo killall pulseaudio
$ sudo apt-get purge pulseaudio pulseaudio-utils gstreamer0.10-pulseaudio \ libpulse-browse0 paman pavumeter pavucontrol $ sudo apt-get purge $ sudo mv /etc/asound.conf /etc/asound.conf-bak
$ rm ~/.pulse-cookie
$ rm -r ~/.pulseReboot. Then install:
$ sudo apt-get install alsa-base alsa-tools alsa-tools-gui alsa-utils alsa-oss \
alsamixerguilibalsaplayer0
Everything now works fine! In fact, sound is better than it ever has been. Speakers seem to gently boom out the sound. Now you will want to install mplayer. Most everyone knows how to use mplayer, if not use $ sudo apt-get install mplayer$ man mplayer That should do well enough. Anyway, what I wanted to do was to have an internet radio that I could access from the command line. It is not really hard to do with mplayer.The hard part is getting the url with the playlist as part of the url. The reason forthat is not to have to story the playlist file locally. That saves space and youwill always have the latest version. You will have to save links to see which onesworks. Since I will be accessing the server remotely, I plan to use the command lineso that I do not have to deal with the monitor on the server. It can stay off! 
When you deal with anything command line, you are talking about using a batch fileunless you want to manually always type in the commands. You can go to http://radio-locator.com/ a list of stations. Let's go for the menu method for choosing what internet radio stations to listen to such as this: 
Since made some changes, but that is ok. Found a better radio station or two. Like I saidyou can enter the commands one at a time for instance if you have a complete url with theplaylist, you might use: $ mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuha_128.m3u Not all internet radio stations will let you do that, so you have to download the playlist locally. They you might use: $ mplayer -playlist koda-fm.m3u That assuming the playlist is in the current directory, otherwise you will have to usethe correct path to the file. Since I do not have a lot of radio stations to listen to,setting up a simple batch files with all the information to use the playlists is easy. Sohere is some example code that could be used on a server or even an embedded device such as the Raspberry Pi: #!/bin/bash # # Script to emulate a radio. # while : do clear echo "************************" echo "* Radio tuner *" echo "************************" echo "* [1] Alvin *" echo "* [2] 91.7 classical *" echo "* [3] 88.7 global *" echo "* [4] Kuhf news *" echo "* [5] KPFT *" echo "* [6] Koda *" echo "* [7] KTBZ *" echo "* [8] KSBJ *" echo "* [9] Klol *" echo "* *" echo "* [0] Exit/Stop *" echo "************************" echo echo "Enter your menu choice [1-9 or 0]: " read -n 1 yourch case $yourch in 1) mplayer -playlist http://www.kaccradio.com/images/KACCRadio.asx ;; 2) mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuha_128.m3u ;; 3) mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuhfglobal_128.m3u ;; 4) mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuhfnews_128.m3u ;; 5) mplayer -playlist http://kpft.org/KPFT-hifi.wma ;; 6) mplayer -playlist[path]/koda-fm.m3u ;; 7) mplayer -playlistktbz-fm.m3u ;; 8) mplayer -playlist/[path]ksbjfmaac.pls ;; 9) mplayer -playlist/[path]/klolfmaac.pls ;; 0) exit 0;; *) echo "Oopps!!! Please select choice 1,2,3,4,5,6,7,8, or 9" echo "Press Enter to continue. . ." ; read ;; esac done[path]
You could reuse this script for other projects #!/bin/bash # # Script to [description]. # while : do clear echo "************************" echo "* [Title] *" echo "************************" echo "* [1] *" echo "* [2] *" echo "* [3] *" echo "* [4] *" echo "* [5] *" echo "* [6] *" echo "* [7] *" echo "* [8] *" echo "* [9] *" echo "* *" echo "* [0] Exit/Stop *" echo "************************" echo echo "Enter your menu choice [1-9 or 0]: " read -n 1 yourch case $yourch in 1) ;; 2) ;; 3) ;; 4) ;; 5) ;; 6);; 7);; 8);; 9);; 0) exit 0;; *) echo "Oopps!!! Please select choice 1,2,3,4,5,6,7,8, or 9" echo "Press Enter to continue. . ." ; read ;; esac done
So there is the barebones script. Have fun! You certainly can use a web based menu, so you do not have to log into the machine, but that is for another day. But thismight wet your appetite for use as a web page on a server (untested): 
#!/bin/sh
echo "Content-type: text/html\n"
# read in our parameters
CMD=`echo "$QUERY_STRING" | sed -n 's/^.*cmd=\([^&]*\).*$/\1/p' | sed "s/%20/ /g"`
# our html header
echo "<html>"
echo "<head><title>Internet radio</title></head>"
echo "<body>"
# test if any parameters were passed
if [ $CMD ]
then
case "$CMD" in
1)
mplayer -playlist http://www.kaccradio.com/images/KACCRadio.asx
;;
2)
mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuha_128.m3u
;;
3)
mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuhfglobal_128.m3u
;;
4)
mplayer -playlist http://www.publicbroadcasting.net/kuhf/ppr/kuhfnews_128.m3u
;;
5)
mplayer -playlist http://kpft.org/KPFT-hifi.wma
;;
6)
mplayer -playlist koda-fm.m3u
;;
7)
mplayer -playlist ktbz-fm.m3u
;;
8)
mplayer -playlist ksbjfmaac.pls
;;
9)
mplayer -playlist klolfmaac.pls ;;
*)
echo "Unknown command $CMD<br>"
;;
esac
fi
# print out the form
# page header
echo "<p>"
echo "<center>"
echo "<h2>Radio stations</h2>"
echo "</center>"
echo "<p>"
echo "<p>"
echo "Choose which radio station do you want to listen to: "
echo "<form method=get>"
echo "<input type=radio name=cmd value=1> Alvin <br>"
echo "<input type=radio name=cmd value=2> 91.7 classical <br>"
echo "<input type=radio name=cmd value=3> 88.7 global <br>"
echo "<input type=radio name=cmd value=4> Kuhf news <br>"
echo "<input type=radio name=cmd value=5> KPFT <br>"
echo "<input type=radio name=cmd value=6> Koda <br>"
echo "<input type=radio name=cmd value=7> KTBZ <br>"
echo "<input type=radio name=cmd value=8> KSBJ <br>"
echo "<input type=radio name=cmd value=9> Klol <br>"
echo "<input type=submit>"
echo "</form>"
echo "</body>"
echo "</html>"
Try at your own risk.—————————————————————-
Breakfast time again.
