alaa sam

hey everyone I was wondering if there is any tool that I can use to draw a Wi-FI coverage map in linux ?? Thanks in advance

I install windows 7 in fedora running system without overwrite the previous OS.but the problem is if i install windows 7, it shows 2 os's when starting my system.I want to boot my system in fedora by default.what's the solution??????????????

Hi everyone I want to make an ad-hoc network so that I can share the Internet connection from my laptop with my mobile phone . I watched some videos about this but non of them works . Can anyone help me please ? Thanks in advance .

hey I'm thinking about implementing a simle scan tool , to show the available wireless networks and some information about it . I'm thinking about writing it in C . Is it a good choice?? what libraries do I need to impelement it ?? Thanks in advance

ls -1 | grep ".h$" -> searches backwards findfirstchar '.' for file-type h [ C++ Header file ] ls -1 | grep ".cpp$" -> searches backwards findfirstchar '.' for file-type cpp [ C++ Source file ] etc...

Hey everyone I'm using Linux mint 14 , I have a problem with it the screen doesn't lock automatically after sometime passes without usig it . Also when I suspend the screen doesn't lock either . I want to make it lock after some time and when it suspend . …

hey everyone I want to change some environment variables , but I can't find the .bashrc file were I can change them, so can anyone tell me how to change environment variables in linux mint 14

hi everyone I'm supposed to write a wifi analyzer in java , what are the libraries I need to do it ? also I'm using linux will my work be protable for windows??

downloading linus operating system

hey I'm supposed to implement A wifi analyzer tool for android phone , but I'm really aware of what it should do exactly . So any suggestions for this tool , I mean what a user might wish to have in such tool . Thanks in advance

Hi everyone I have uninstalled ubuntu from my laptop but it still appear in the grup what should I do , to get rid of it??

#include<stdio.h> #include<stdlib.h> struct complex { int real,imag; }; int main() { int choice; struct complex x, y, z; { printf("Press 1 to add two complex numbers.\n"); printf("Press 2 to subtract two complex numbers.\n"); printf("Press 3 to multiply two complex numbers.\n"); printf("Press 4 to divide two complex numbers.\n"); printf("Enter your choice\n"); …

How to find this series without using power function in c 1+x/1!+x2/2!+x3/3!+x4/4! please help me out i'm unable to solve these type of questions

Hi every one . I have a question , now when the TCP persistent timer times out , a probe is sent , Does this probe conatin any application layer data ?? or why its never acked ? and the sequence number used is it differentt from the one used …

Hi everyone . I'm studying network engineering and security , its my forth year . I have taken a network programming cousre , and I will take Unix system programming course soon . I love programming , and I love networks . I have taken network course , network protocols …

hey I'm writing a multithreaded server , and I want to print a line in a file whenever a client is connected , I need to lock the filestream to prevent the lines of multiple thread from overlapping I used an integer lock but it won't work right , so …

Hi everyone I'm using stat() function to get the file's attributes , but I don't know how to get the permission of it . So can anyone tell me how to find the permission of the file?? Thanks in advance

:#include<stdio.h> #include<conio.h> void main() { int i; float x[10],value,total; clrscr(); printf("enter ten real numbers"); for(i=0;i<10;i++) { scanf("%f",value); x[i]=value; } total=0.0; for(i=0;i<10;i++) total=total+x[i]*x[i];//eliminate total from here printf("/n") for(i=0;i<10;i++) printf("[%2d]=%5.2f/n",i+1,x[i]; printf("total=%2f/n",total); } if i write total=x[i]*x[i] =102 an another answer why?? nd if wrie=total=total+x[i]*x[i] =446.86 10 real number 1.1, 2.2 ,3.3 ,4.4 …

hi everyone well I'm learning network programming currently , I've written a day time client and server but when I run the client it gives me a connection error . Here is my client code #include<sys/socket.h> #include<sys/types.h> #include<stdio.h> #include<netinet/in.h> #include<netdb.h> int main(int argc ,char *argv[]) { int sockfd, n; char …

I've used malloc countless times, but as far as I know, reading and writing to memory that isn't expressly yours (which is in fact done by the malloc function) causes a segfault. If I wanted to make my own dynamic allocation functions my computer would probably just laugh at me …

hey everyone well my screen lock doesn't work also ctrl+alt_l doesn't lock it , also after a suspend it doesn't lock even though it's set to do so what can I do to make it work ?? I use ubuntu 12.04

Hi everyone well I've downloaded GNUbiff on my ubuntu 12.04 tls bs I really don't know how to use it , I have a yahoo account , hotmail account , and a gmail account , so how to set the GNUbiff to work with them?? Thanks in advance

Hi everyone well currently I am working on a simple malloc and free implementation but I am facing some problems . I get a segmentation fault this is my output inserting node 0 0xc87000 inserting node 1 0xc87014 inserting node 2 0xc87028 inserting node 3 0xc8703c inserting node 4 0xc87050 …

hey everyone Well currently I'm on a very long holiday and I'm trying not to waste my time doing nothing . So can any one tell me where I can get some tasks or anything to tell me what to implement ?? so that I can learn new things in …

hi everyone , I installed wireshark on my ubuntu 11.10 laptop ,but it tells me no interfaces can be used for capturing with this configuration , so how can I solve this problem ?? Thanks in advance.

hi everyone I'm working currently with linked list , and there's a problem with my code , the link is writing the same place every time (it replaces the previous values with the new ones without inserting a new one ) can anyone help ? Thanks in advance #include<stdio.h> #include<unistd.h> …

hi everyone I'm asked to implement malloc and free as my project in operating system course , but the big problem is that i have searched a lot about it and still have no idea about it , if anyone can tell me what are the main functionalities of the …

hi everyone well I'm using ubuntu 12.04 , I'm trying to install the update but it keeps giving me a message that the source isn't authorized . So is there's anyway to install the required updates using the command line ?? Thanks in advance

hi everyone I've tried to format my laptop and get windows7 but during the format the laptop stopped working and when I ran the diagnose I got this error code 0152 and the following messsage "Optical driver -incorrect status -1A error register ". so what I'm supposed to do now?? …

hi everyone I have been using ubuntu for a while and I have recently switched to ubuntu 11.10 well I can't find the root terminal also su command always gives me authorization failure and I don't know why . So any help?? Thanks in advance