some basic string functions in PHP.

hi,

The php functions i have learnt today are...

1.strlen(string or $variable) -- tells the length of the string.

$var = 'hello';
echo strlen($var);

o/p: 5

2. strrev(string or $variable) -- reverses the given string.

$var = 'hello';
echo strrev($var);

o/p: olleh

3. strtolower(string or $varible) -- makes the entire string into lower case.

$var = 'HEllO';
echo strtolower($var);

o/p: hello

4. strtolower(string or $varible) -- makes the entire string into upper case.

$var = 'hello';
echo strtoupper($var);

o/p: HELLO

5. ucfirst(string or $varible) -- makes the first character of the string into upper case.

$var = 'hello';
echo ucfirst($var);

o/p: Hello

6. ucwords(string or $varible) -- makes the first character of the string into upper case.

$var = 'hello there';
echo ucwords($var);

o/p: Hello There

7. explode(delimiter,str,limit(optional)) -- splits the given string on every delimiter.

$fullname = 'bullet paandi';
$name = explode(" ",$fullname);
echo "firstname = ".$name[0];
echo "lastname = ".$name[1];

o/p: firstname = vijay lastname = kumar

8. str_split(str,split_length(optional)) -- splits the given string accordind to split length.

$fullname = 'bullet paandi';
$name = str_split($fullname,3);
echo " ".$name[0];
echo " ",$name[1];
echo " ".$name[2];
echo " ".$name[3];

o/p: bul let pa and i

TANCET M.E, MBA, MCA Unofficial Rank List.

Hi,

This year i appeared for the TANCET for M.E. My score is 50.381,  from the moment the result came, i was waiting for the unofficial rank list. I saw it today in the internet. The link where i found it was,

http://www.scribd.com/doc/58698616/Tancet-2011-Me-Rank-List-Pre-Counselling

there is also unofficial rank list for MBA and MCA.

the links are...

http://www.scribd.com/doc/58645861/TANCET-2011-MBA-RANK-LIST-Pre-Counseling

http://www.scribd.com/doc/58678928/Tancet-2011-Mca-Rank-List-Pre-Counselling

Note : If you wanna search your number just type in the search field of black pop up of scribd.

Starting slax os in virtual box using VBoxManage commandline.

hi,

Today i was told to study the virtual box command line functions. I studied a little bit.

And i thought its time to try and start a VM( Virtual Machine ) through command line.

I hope you already installed Virtual box in your system.

This is just a basic setup for a os. so there is only 7 commands to start a VM.

So lets get started,.....

open terminal...

First command  : To create a VM.

   $VBoxManage createvm --name "slax try" --ostype Linux --register

This first command tells the virtual box to create a VM named "slax try", then ostype. slax is a linux based os  so "Linux"( make sure L is caps otherwise Vbox will bang you with error). register helps to register the created VM with Vbox.

Second command  : To add memory and other essential things to VM.

    $VBoxManage modifyvm "slax try" --memory 512 --acpi on --nic1 nat
--audio pulse --audiocontroller ac97

This command modifies the "slax try" VM with 512 MB RAM, enabling ACPI, NAT ,pulse audio and its controller.

Third command : creating hard disk for VM.

    $VBoxManage createhd --filename "slaxhd.vdi" --size 3072

The third command used to create a file which will act as a hard disk for created "slax try" VM. You have to give a name for the hard disk file with .vdi extension. then specify how much space you wanna allocate for the had disk( in MB).

Fourth command : creating storage controller.

   $VBoxManage storagectl "slax try" --name "IDE Controller" --add ide
--controller PIIX4

This command helps to name the controller and add ide and its controller to VM.

Fifth command : attaching Hard Disk storage to storage controller.

    $VBoxManage storageattach "slax try" --storagectl "IDE Controller"
--port 0 --device 0 --type hdd --medium "slaxhd.vdi"

This command attaches the storage controller to the VM hard disk.

Sixth command :  attaching dvddrive to storage controller.

    $VBoxManage storageattach "slax try" --storagectl "IDE Controller"
--port 0 --device 1 --type dvddrive --medium
/media/7AD4E860D4E8205D/zen/slax-6.1.2.iso

Seventh ( last )  command: starting the created VM.

       $VBoxManage startvm "slax try" --type gui

Have fun :)

Installing virtualbox in fedora 14.

hi,

Today i installed virtualbox in my system, in gui mode its very simple and easy.

http://www.virtualbox.org/wiki/Linux_Downloads

get virtualbox software in the above mentioned link.

if your system is 32 bit then click on i386.

if 64bit then click AMD64.

on clicking you will be prompted to open or save the file. just save the file.

then after downloading, goto where it is downloaded there will be an rpm file.

just right click on it click on 'open with package installer' .

you will see a screen like this.

then you will be prompted with some dependencies and authentication popups just continue.

after installation has finished.

goto "Applications>>System Tools>>Oracle VM VirtualBox"

the installed virtual box will be started now, so you will see a screen like this...

Installing ubuntu inside virtualbox in fedora 14.

hi,

Today i installed virtualbox in my system, in gui mode its very simple and easy.

http://www.virtualbox.org/wiki/Linux_Downloads

get virtualbox software in the above mentioned link.

if your system is 32 bit then click on i386.

if 64bit then click AMD64.

on clicking you will be prompted to open or save the file. just save the file.

then after downloading, goto where it is downloaded there will be an rpm file.

just right click on it click on 'open with package installer' .

you will see a screen like this.



then you will be prompted with some dependencies and authentication popups just continue.




after installation has finished.

goto "Applications>>System Tools>>Oracle VM VirtualBox"

the installed virtual box will be started now, so you will see a screen like this...



now we have to create a vitual machine. so click on 'New' icon.

you will see a popup window like this,



click on next

you will see a popup which asks for name and os and its version.

just add the specification of what you going to install in your VM(Virtual Machine).

I installed ubuntu 10.10. So i gave name as ubuntu 10, OS as Linux then version as ubuntu.



then click next.

In this popup you have to allocate a specific RAM for your VM. since i have a 2GB RAM, i gave 512 MB for VM.



them click next.

Now you have to allocate a space in your system which will act as a hard disk for your VM. so i gave 'create new hard disk'



then click next.

In the next window you have to select either dynamic or fixed type of storage for your hard disk(or file whatever...).

i suggest dynamic.



after selecting the choice click next.

give the location and size for the virtual hard disk that is to be created.



then click next.

the window will ask for the confirmation.



click next.

then you will be asked for another confirmation for creating the virtual machine.

click next.

thats it you created a virtul machine, well done.



then we have to install ubuntu 10 in vitual machine.

todo that we have tell it to boot from cdrom.

just click on 'settings'  ,you will see a popup box like this,



in it see the left menu.

click on 'storage' you will see this.....



sorry i took a screen shot of my slax os. but the steps are the same.

click on  'filename.iso'. here 'slax-6.1.0.iso'.

you will see like this.



click on the icon which my mouse cursor is pointing to and then give the path of the ubuntu.iso file to it(make sure that iso file is bootable.).

then click ok.

thats it well done... now start the system by clicking green 'start' button.

you will see a screen with ubuntu booting in it. congrats :)

have fun :)

how to start a program right after a user login?

hi,

Today i learnt how to start a program right after a user logged in.

its really simple...

just goto system>>preferences>>start up applications

you will see a pop up box like this



now click on 'Add'

you will see another pop up like this...



then click on 'Browse', add specify the program which you wanna use on start up.

you can name the program and also add some comment for it.

then click 'Add'

thats it now log out and login

have fun :)

How to run something when the computer starts?

hi,

Today i learnt how to run a command right after you boot, before anybody logs in.

To do that we have to edit a file which is in  /etc the file is rc.local

first  Open a terminal  then Become root using  su - 

then open the file in your favorite text editor.

i have  used gedit /etc/rc.local &

then add the command that you want to run to the end of the file.

then reboot the system.

have fun :)

Python program which finds the numbers in a given string using regular expression

hi,

Today i was seeing regular expression in python. I just read some regexp funtions so thought to write a program which gives a list of numbers from a given string.

the code is given below...

#! usr/bin/env python
import re
string1 = raw_input("enter the text from which you wanna get only numbers: ")
numlist = re.compile('\d+').findall(string1)
print numlist

i/p:

enter the text from which you wanna get only numbers : hello123 rte34d 5b6b7b 12.03

o/p:

[ '123', '34', '5', '6', '7', '12', '03' ]

Note: it does not support floating point numbers eg:'12.01' is taken as '12','01'

Installing espeak

hi,

Today i installed espeak , if you pass a string or number to it. it will speak what we gave as the parameter.

if you give this command. your system will tell hello.

ex: espeak hello.

its really easy to install,login as root user and just type

yum install espeak

then it will be installed.

Python program to print common words in two files.

hi,

Today i made a python program to print common words in two files.

the code is.....,

#! usr/bin/env python
# filename : findwords.py

f1 = open('words.txt').readlines()
f2 = open('words1.txt').readlines()
if len(f1) != 0 | len(f2) != 0:
    uniq1 = set(words for line in f1 for words in line.strip('\n\t').split(" "))
    uniq2 = set(wordss for lines in f2 for wordss in lines.strip('\n\t').split(" "))
    for words in uniq1:
        for wordds in uniq2:
            if words == wordds:
                print words

i/p:

(words.txt)

this is a text string
this is another string

(word1.txt)

hello therer
this is a text string
actually really
sundelly peruchally    
this is another string
this is a text string

o/p:

a
string
this
text
is
another






i hope u like it...

have fun :)

Simple calculator program using python.

hi,

Today i made a simple calculator program in python. The code is given below,..

#! usr/bin/env python
# filename : pycalc.py
"""This is a simple calculator program  """

def addition( val1 , val2 ):
    """This function adds two numbers and returns result"""
    return val1 + val2

def subtraction( val1, val2 ):
    """This function subtracts two numbers and returns result"""
    return val1 - val2

def multiply(val1 , val2):
    """This function multiplies two numbers and returns result"""
    return val1 * val2

def division(val1 , val2):
    """This function divides two numbers and returns result"""
    return val1 / val2


VALUE1 = int(raw_input("enter the first number    "))
VALUE2 = int(raw_input("enter the second number   "))
OPTION = int(raw_input("enter the OPTION \n 1.addition \n \
2.subtraction \n 3.multiplication \n 4.Division\n \n"))

if OPTION == 1:
    print "Result = ",addition(VALUE1 , VALUE2)
elif OPTION == 2:
    print "Result = ",subtraction(VALUE1 , VALUE2)
elif OPTION == 3:
    print "Result = ",multiply(VALUE1 , VALUE2)
elif OPTION == 4:
    print "Result = ",division(VALUE1 , VALUE2)
else:
    print "invalid input, sorry try again"

Snap - Explanation : I used separate  function for each action - then get option and perform particular function using 'if' and 'elif' condition - then print the result.

i/p:

enter the first number    30
enter the second number   10
enter the OPTION
 1.addition
 2.subtraction
 3.multiplication
 4.Division

3

o/p:

Result =  300

locate command

hi,

LOCATE:

The locate command is used to search a file by its name.

Eg: locate hello.txt

this will print the path where it finds hello.txt file in your system.

The pwd,mkdir,rmdir.

PWD:

The 'pwd' command is used to display or print the present working directory.

Eg: pwd


/home/parthi/Documents/


MKDIR:

The 'mkdir' command is used to create a new directory.

Eg: mkdir new

A new directory named 'new' will be created.

you can also create multiple new directories.

Eg: mkdir hello abcd xyz

new directories named 'hello' ,'abcd' , 'xyz' will be created.

RMDIR:

The 'rmdir' command is used to delete or remove empty directory.

Eg: rmdir new

this deletes the directory called 'new' if its empty.

Eg: rmdir hello abcd xyz

multiple directories can also be deleted like this.

Changing password for root and other users in fedora.

hi,

Today i learnt "passwd" command, which helps to change password for root user and as well as other users.

the syntax is "passwd username"

open the terminal login as root user using

"su -"

then just type "passwd root" and hit enter.

you will be prompted to enter new password for the root.

Actually "passwd" is enough to change password for the root.if we leave the username blank. it will assume that we are changing password for the root.

if you wanna change password for the user just type "passwd username" and hit enter.

ex: passwd parthi


try it, have fun :)

How to change the default splash screen in fedora.

hi,

Today i learnt how to change the splash image in fedora.

splash image is the image shown at the background when GRUB is displays the list of os.

you can change that default image to image of your choice.
To do this you have to do the following.

First the image you want to display should be 640x480 pixels.

And also the image should be of only 14 colours.
So,to do that open that image in gimp(or any image editor of your choice).

Then right click on the image and click on Image->Mode->Indexed...

In the Indexed Color Conversion dialog that appears,
click on the radio button "Generate optimal Palette" and in "# of colors" enter 14. Click OK.

Now save the image as splash.xpm in a directory.

Now open a terminal and login as root userusing

su -

then change to the directory where you have splash.xpm

Now use this command to gzip the image.
 gzip splash.xpm

Now the file splash.xpm will be changed to splash.xpm.gz.

[Note : please do back up the pre-existing splash.xpm.gz file which is in
the /boot/grub directory.]

then copy this splash.xpm.gz to the /boot/grub directory using,
cp splash.xpm /boot/grub/

then you will be prompted to
overwrite the existing file splash.xpm.gz [y/n]:

enter y.


That's all! then reboot,

can you see the new splash screen!!!

enjoy :)

python program to swap two numbers.

hi,

I made a python program to swap two numbers.its damn simple in python.

the code is..

#!usr/bin/env python
a=10
b=20
print "a = ",a,"b = ",b
print "after swapping"
a,b=b,a
print "a = ",a,"b = ",b

o/p:

[parthi@parthicomp pyth files]$ python swap.py
a =  10 b =  20
after swapping
a =  20 b =  10

Python program to print fibonacci series upto given number.

hi,

Today i made a python program that prints fibonacci series upto 'n'  number.

the code is....

#usr/bin/env python
inpnum=int(input("enter the limit : "))
fiblist=[]
a,b=0,1
while a<inpnum:
    fiblist.append(a)
    a,b=b,a+b

print str(fiblist).strip("[]")

i/p:

enter the limit : 100

o/p:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89

How to disable all usb ports in fedora.

hi,

Today i learnt how to disable all usb ports in fedora, don worry its too easy.

to do that you have to edit the grub.conf file.

so login as root user using

su - 

then change to grub directory using cd /boot/grub .

now open the grub.conf using your favorite editor.

i used vi grub.conf.

then you will see something like this…..

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,5)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,5)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.6-45.fc14.i686)
root (hd0,5)
kernel /vmlinuz-2.6.35.6-45.fc14.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
initrd /initramfs-2.6.35.6-45.fc14.i686.img
title Other
rootnoverify (hd0,0)
chainloader +1

You just have to append a word after “quiet″ to “quiet nousb″. now the line should look like this....

kernel /vmlinuz-2.6.35.6-45.fc14.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet nousb

now save and exit the file, and restart the system.

help: Try the lsusb command to list available usb in your system.

paste - A command to combine columns of two different files.

hi,

Today i learnt a command called 'paste'. this command will be very useful.this command is used to combine columns of two different files.

Eg:

(word.txt)

hello

how's

where's

(word1.txt)

dude

life!!!

everyone????

$ paste word.txt word1.txt


o/p:

hello      dude.

how's     life!!!

where's  everyone???

How to change boot order in fedora.

hi,

Today i learnt how to change the default boot order or boot order in fedora grub.

login as root user using

su - 

then change to grub directory using cd /boot/grub .

now open the grub.conf using your favorite editor.

i used vi grub.conf.

then you will see something like this.....

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,5)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,5)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.6-45.fc14.i686)
root (hd0,5)
kernel /vmlinuz-2.6.35.6-45.fc14.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
initrd /initramfs-2.6.35.6-45.fc14.i686.img
title Other
rootnoverify (hd0,0)
chainloader +1

you just have to change the "default=0" to "default=1". if windows is in second position,the boot order starts from 0,(i.e 0 is the first object or os).

Python Program that shows percentage of love.

hi,

i made a python program to show the percentage of love.

the program has a lot of bugs. this is just an idea.

the code is,..

#/usr/bin/env python

firstName = raw_input("enter your name : ")
secondName = raw_input("enter your lover name : ")

if len(firstName) == 0 | len(secondName) == 0:
    print "enter the name"
else :
    name1List = list(firstName)
    name2List = list(secondName)
    alphabets = {}
    alphabets["a"]=10
    alphabets["b"]=11
    alphabets["c"]=27
    alphabets["d"]=19
    alphabets["e"]=27
    alphabets["f"]=15
    alphabets["g"]=24
    alphabets["h"]=34
    alphabets["i"]=13
    alphabets["j"]=9
    alphabets["k"]=13
    alphabets["l"]=8
    alphabets["m"]=11
    alphabets["n"]=6
    alphabets["o"]=25
    alphabets["p"]=28
    alphabets["q"]=31
    alphabets["r"]=21
    alphabets["s"]=12
    alphabets["t"]=19
    alphabets["u"]=14
    alphabets["v"]=18
    alphabets["w"]=26
    alphabets["x"]=20
    alphabets["y"]=32
    alphabets["z"]=29
    name1num = 0
    name2num = 0
    for letter in name1List:
        name1num = alphabets[letter] + name1num

    for letters in name2List:
        name2num = alphabets[letters] + name2num

    result = name1num+name2num
    if result > 100 :
        print "your love percentage is ",result%100,"%"
    else :
        print "your love percentage is ", result,"%"

i/p:

enter your name : ram
enter your lover name : sita

o/p:

your love percentage is  96 %

Python program for generating prime factors for the given number

hi,

I made a program to generate prime factors for the given number.

the code has a lot of bugs. this is just an idea.

the code is,...
# usr/bin/env python
def checkPrime(val):
    for num in range(2,val):
        if val % num == 0:
            return True
            break
    else:
        return False

inputNum = int(input('enter the number : '))
storeFac = []
while checkPrime(inputNum):
    for numb in range(2,inputNum):
        if inputNum % numb == 0:
            inputNum = inputNum / numb
            storeFac.append(numb)
            break

storeFac.append(inputNum)
print "the prime factors are : ",str(storeFac).strip('[]')




snap-explanation: checking the given number if prime - if prime print the number - else use while loop to check number is still prime - then for loop to to find the factors - then if to to check numb is the factor - if true make given number divided by numb - then append the factor in a list - then print the factors.

i/p:

  enter the number : 60

o/p:

the prime factors are :  2, 2, 3, 5

Google's all doodle's

hi,

Today i found that we can see all the doodles(logos)  created by google.

the link to see them is, http://www.google.com/logos/

Sending files using SCP command

hi,

Today i learnt how to send files in a networt using 'scp' command.

scp(secure copy) is used to copy files across an ssh connection that will be encrypted by  algorithms. so its more secure.

To use this command you need to have open-ssh installed in the hosts.

so lets see how to use it,

scp [[user1@]from-host:]source-file [[user2@]to-host:][destination-file]

user1 = the user1 is the one who owns the file i.e to be transferred.

user2 = user 2 is the one whom you are trying to send the file.

from-host = is the user1 ip address.

to-host = is the user2 ip address.

source-file = is where the file is the user1's computer.

destination-file = where you want to store the file in user2's computer after copying.

there are few options

-p    preserves the modification and access time,and also the permission of the source-file in                      destination-file

-q    wont show the progress indicator

-r     recursive,i.e it copies all the contents in the source-file (directory)

-v     shows debug messages

eg:

scp -r parthi@198.122.2.1:/home/parthi/books student@198.122.2.5:/home/student/

this copies the entire directory...

try it,

have fun. :)

To view pdf files using mozilla web-browser in fedora

hi,

if you wanna view the pdf file using firefox web-browser try this,

open terminal,

login as root user.

then type the following command….

$ yum install mozplugger xpdf


press enter. then it will prompt for ‘y/n’: press ‘y’ after seeing ‘complete’

restart the browser, now you can view the pdf files using your mozilla browser.

Command to check wheather a software package is installed in fedora

hi,

There is a command which tells weather a software package is installed or not in your system.

the command is

$ rpm -q   packagename

you have to replace the package name what you are searching for...

eg:

[parthi@localhost ~]$ rpm -q ruby
ruby-1.8.7.334-1.fc14.i686
[parthi@localhost ~]$ rpm -q mayavi
package mayavi is not installed


have fun :)

How to see list of available software packages for fedora in terminal

hi,

I wanted to know how many software packages are really there for fedora.

there is command to show the available packages in the terminal itself.

the command is

$ yum list available

trust me there is hell a lot of software packages for fedora.

so try this...

$ yum list available | less

or if u want to store it in a file use this command,instead..

$ yum list available > filename.txt

enjoy have fun :)

How to edit main menu in fedora?? well the answer is here

hi,

Today i wanted to change the orders of my main menu so i googled for that.

And i found the solution...

the fedora doesnt have a menu editor... so we have to install a menu editor... i installed 'alacarte'

to install this login as root user

then type the following command

$ yum install alacarte

press enter. then it will prompt for ‘y/n’: press ‘y’ after seeing ‘complete'

then goto system menu --> preference --> Main Menu

you will see a screen like this to edit your menu..



have fun :)

Watch movie using firefox web-browser in fedora

hi,

if you wanna watch the movies using firefox web-browser try this,

open terminal,

login as root user.

then type the following command....

$ yum install totem-mozplugin gstreamer-plugins-ugly gstreamer-plugins-bad

press enter. then it will prompt for 'y/n': press 'y' after seeing 'complete'

restart the browser, now you can see movies using your browser.

Python program to find repeated occurrence of words in a file and print them.

hi,

i made a program to find repeated occurrence of words in a file and print them.

the code is,

f1 = open('words1.txt')

file1lines = f1.readlines()
if len(file1lines) != 0 :
    uniquewords = set(word for line in file1lines for word in line.split(" "))
    wordlist = list(word for line in file1lines for word in line.split(" "))
    for words in uniquewords:
        print words.rstrip('\n')," : ",wordlist.count(words)," occurence"

f1.close

i/p:

(word1.txt)

hello therer
this is a text string
actually really
sundelly peruchally    
this is another string
this is a text string

o/p:

[parthi@localhost pyth files]$ python wordtimes.py
a  :  2  occurence
string  :  3  occurence
therer  :  1  occurence
really  :  1  occurence
this  :  3  occurence
text  :  2  occurence
is  :  3  occurence
actually  :  1  occurence
sundelly  :  1  occurence
another  :  1  occurence
peruchally     :  1  occurence
hello  :  1  occurence

Python program to random generate a pronounceable(4 letter) word.

hi,

I made a program to random generate a pronounceable 4 word.

the code is,

import random
vowels = ['a','e','i','o','u']
consonants = ['b','c','d','f','g','h','j','k','l','m','n','p','q','r','s','t','v','w','x','y','z']
a = random.sample(consonants,2)
a.insert(1,random.choice(vowels))
a.append(random.choice(vowels))
print "".join(a)

snap - explanation : taking vowels and consonants in two lists - use random.sample to fetch two consonants as list - then insert and append vowels - then make list to string and print it.

o/p:

[parthi@localhost pyth files]$ python randgen.py
culo
[parthi@localhost pyth files]$ python randgen.py
xuki
[parthi@localhost pyth files]$ python randgen.py
tuju
[parthi@localhost pyth files]$ python randgen.py
ziqu

Python program to print number of occurrences of lines in a file from another file

hi,

Today i made a python program to print number of occurrences of lines in a file from another file.

the code is,

f1 = open('words.txt')
f2 = open('words1.txt')

file1lines = f1.readlines()
file2lines = f2.readlines()
if len(file1lines) != 0 | len(file2lines) != 0:
    for everyline in file1lines:
        print file2lines.count(everyline)," occurrences :",everyline.rstrip('\n')

f1.close
f2.close

snap - explanation : reading all lines from two files - storing lines in list - comparing with for loop - then printing the line and occurrence.

i/p:

(word.txt)

this is a text string
this is another string

(word1.txt)

hello therer
this is a text string
actually really
sundelly peruchally    
this is another string
this is a text string

o/p:

2 occurrence : this is a text string
1 occurrence : this is another string

Python program for printing common lines in two files.

hi,

today i made a simple python program to print common lines in two files.

the code is given below...

f1 = open('words.txt').readlines()
f2 = open('words1.txt').readlines()


if len(file1lines) != 0 | len(file2lines) != 0:
    for line in set(f1):
        for lines in set(f2):
            if line == lines:
                print line.rstrip('\n')

f1.close
f2.close

snap -explanation:

reading multiple lines from two files -  using 'set' to  eliminate repeated lines - comparing two files with for loop - printing the common lines.

i/p:

(word.txt)

this is a text string
this is another string

(word1.txt)

hello therer
this is a text string
actually really
sundelly peruchally    
this is another string
this is a text string

o/p:

this is a text string
this is another string

forgotten saved password ?? there is an option to see the saved password in firefox

hi,

if you just given remember password and used that site a long time and forgotten the password. Don worry there is an option to see the saved passwords.

open firefox goto Edit --> Preferences then you will see something like this.



then click on security-->saved password . you will see a new pop up window there will be a button called "show password" click it.

you can see your saved password now.

Basic linux commands

hi,

today i am going to learn some basic linux commands,

first i am goin to see 'echo' command...

but first we should know that commands are case-sensitive,and most commands take arguments(parameters).

now lets see about 'echo' command.

ECHO:

The echo command is used to display or print its arguments(parameters)

Eg: echo basic linux commands

basic linux commands

ok now it prints its arguments as it is,

lets try echo itself as a argument...

Eg: $ echo echo

echo

ok it just prints echo. so echo prints the arguments, whatever it may be...

CAT:

The cat command is used to create and display the contents of a file. after entering the contents press ctrl+d.

Eg: $ cat > hello.txt

hello world

any one there

$ cat hello.txt

hello world

any one there


so,it "cat > filename" is used to create a file and "cat filename" is used to display the contents in the terminal.

LS:

The ls command is used to list the files and directories in the current working directory.

Eg: $ ls

hello.txt

word.txt

parthi

RM:

The rm command is used to remove the file or folder.

Eg: rm hello.txt

no output message appears. that s because it does its job silently.only throws messages when there is some problem in deleting the given file.

let s see when we try to delete a file which is not there.

Eg: rm hello.txt

rm: cannot remove `hello.txt': No such file or directory

fine. lets move on to cp (i.e) copy command...

CP:

The cp command is used to copy file from one file to another or one place to another

Eg: cp word.txt hello.txt

since there is no file named hello.txt in present folder cp commands creates and copies the contents from word.txt. if the file hello.txt is already present in directory it overwrites the file.

compiz easy installation in fedora

hi,

I have installed fedora 14 only a week before, i saw my friends system with rich graphics. he told that its because he installed compiz package in his system.

It had very rich graphics,so i made my mind to install it right away...

the steps i followed are,

$su

$yum install compiz compiz-gnome emerald emerald-themes fusion-icon compiz-fusion-extras compiz-fusion-extras-gnome compizconfig-backend-gconf

it will prompt, enter 'y'

thats it compiz packages will be installed.

launch the Compiz Fusion Icon application from the Application > System Tools menu,then you will see a (blue color box)compiz icon in the top.

Right click that icon to get compiz setting manager to modify to your need.

How to change the boot up time and "other" text to windows on boot up screen of fedora

hi,

if u have fedora and windows on the same system.

then you will see a screen "booting fedora in 5 seconds".

to change it you have to change the grub.conf file.

it will be in /boot/grub/

step 1: open terminal and login as root user using 'su' command.

step 2: then change to the root directory.by typing 'cd /boot/grub'

step 3:then type 'vi grub.conf' to edit that grub file.

step 4:then you will see something like this in that file.

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,5)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,5)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.6-45.fc14.i686)
root (hd0,5)
kernel /vmlinuz-2.6.35.6-45.fc14.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
initrd /initramfs-2.6.35.6-45.fc14.i686.img
title Other
rootnoverify (hd0,0)
chainloader +1

step 6: now press 'i' and change only the timeout and title line, change 5 to 10 (or what ever time its the seconds)  and Other to Windows(or any text or u r name if u like).now the file should look like this:

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,5)
#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=10
splashimage=(hd0,5)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.35.6-45.fc14.i686)
root (hd0,5)
kernel /vmlinuz-2.6.35.6-45.fc14.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
initrd /initramfs-2.6.35.6-45.fc14.i686.img
title Windows
rootnoverify (hd0,0)
chainloader +1

step 7: now press 'esc' button and type ':wq'

thats it now reboot the system. :)

Steps to install fedora with windows on same system(dual booting)

hi,

today i am going to tell how to dual boot fedora with windows,

first allocate a partition in your hard disk which fedora will use after installation.

then follow these steps,

step 1: if the fedora dvd boots you will get this screen.

step 2: make sure that first option "install a new system or upgrade" is selected and then press enter.then you will see this screen.

step 3: press skip or test it if you want to. (i choose skip)

step 4:then you will get this anaconda installer screen,just wait for it to finish. step 5:after it finishes installation you will be presented to graphical fedora installation. you will see big 'f13' or what ever version you are installing after that big f. you will see a button at right bottom corner called "Next". go on and click it.

step 6: then you will get this screen,select which is applicable for you. then click next.

 

step 7:select the language and hit enter.

step 8:then you will be prompted to choose the storage device. choose "basic storage device" and click next.

step 9:then you have to name your computer and click next.

step 10:then select the time zone and click next.

step 11:then you have to create password for superuser or root or administrator(dont forget it).

step 12: then you get this screen, i hope u have allocated a separate partition. so click use free space. and also select check box saying "review and modify partitioning layout"

step 13:then you will get a screen like this.you select the partition in which you want to install.make sure format is stay tick in that partition only, then click next.

step 14:then you will get this prompt to format that partition, click format.

step 15:after that select the space for the swap and then you will get this screen.leave as it is and click next.

step 16: then you will get this screen.

step 17:click next. then you will see a screen like below.

step 18:it will take a bit long, after its over you will get this screen,click reboot.

thats it congratulations :)

if you wanna change the default boot up time and "other" to windows  in boot screen of fedora see my next post.