UNIX/Linux Programming - C++ Forum

Undefined reference - problem in CMakeLists?

I have a large amount of code, so I have tried to only include the relevant parts of the code here

[1 reply] : [quote=larry burns]/ws/larryburns/cmake/ME/ Build /sc/CMakeLists.txt T... (by norm b)

Dont know if it is proper to ask here but still I will have a go: What is the difference between systems and network security? Say for example server, it ...

[no replies]

by bsnayak

difference in received data thgrough listener.c and netcat

I build a simple UDP server which listens continuouls to the hexadecimal datagrams sends from a client. Client specification IP - 192.168.37.1 port - 1901 The...

[11 replies] Last: server_address_ob.sin_family = AF_INET; server_address_ob.sin_po... (by bsnayak)

by mzzz

what's wrong with my shell

hey, guys~ I'm kinda new to shell programming on linux. my code is as follows: #!/bin/bash a = 111 echo $a read -p "..." and the execution result i...

[3 replies] Last: Include f.e. # Code not being debugged set -vx # Your code to be debu... (by tcs)

by bsnayak

identifying a client

Can i recognize a client without receiving data on server from this client. I have two clients, where client one would send a message to client 2. Client 2 must...

[11 replies] Last: @kbw: I solved this issue somehow and i know how it can be identifie... (by bsnayak)

by Scindix

catch SIGSEGV in a library

I'm loading various shared libraries (think of them as small plugins) at runtime. My problem is that these "plugins" will be provided by third parties. So I don...

[3 replies] Last: @tcs Ok. I will see if it's possible to change my design to a multipro... (by Scindix)

by mzzz

what‘s wrong with my makefile

recently, i am learning how to write a makefile on linux. now, i give my source files and returned mistakes: f1.h void f1(); f1.c #include "f1.h" #include <...

[7 replies] Last: @kbw thinks for your kindness. i get it. and think you again (by mzzz)

by HG319

Trying to remotely log in with windows computer

I want to be able to log into remotely to my school's Linux/Unix system so I can work on my labs at home. I downloaded XLaunch, and an SSH Secure Shell Client f...

[4 replies] Last: Use -X instead of -x . From ssh(1): -X Enables X11 forwardi... (by tcs)

by MikiBelavista

build gui

I have a code form company,with bad tutorial.I need to build Gui for the code that has already been compiled.I am giving the link,hope I will get instructions h...

[no replies]

by arortell

String is full of garbage

Hello I have this code here what I need to do is count the number of chars in this string. The word can be as long as WORD_LENGTH. While debugging in gdb the st...

[3 replies] Last: Hi You should consider NULL character to terminate the loop int g... (by raju8438)

by dushantha12

Pthread Unlock and return some value

hi, I want to call to a simple synchronized function and return some value. Is it possible with fallowing code in a multi threaded environment? int d...

[2 replies] Last: Hi, You did not miss anything. I got your idea. It is clarified that ... (by dushantha12)

by Seb26

rPI camera + zBar = memory-leak

Hi, I'v trying to build a simple QR codes scanner using a Raspberry PI with camera and the zBar library. That works but I have a memory-leak problem and I...

[2 replies] Last: valgrind don't work fine on Raspberry PI ... (by Seb26)

by naveenkenz12

fparser.hh

how to include fparser.hh header file in codeblocks in ubuntu please give the whole process urgent plz

[4 replies] Last: no (by naveenkenz12)

by Seb26

[cURL] library call equivalent to shell

Hi world, I'm trying to reproduce this job by using cURL library instead of shell call : curl -F name=seb -F color=blue -F file=@/mnt/ramdisk/myFile.zip ...

[3 replies] Last: Yes, that how you upload a file. (by modoran)

by arortell

Invalid Read && Write Valgrind Error

Hello, I am getting this error from Valgrind. The programs seems to work fine and all the memory is freed. If I comment out the call to the size function there ...

[2 replies] Last: Hi could you post your hashTable.h and main() program? (by tipaye)

by IamSumit

Playing .pcm file?

Hi all , i have .pcm/.raw./wav file i want to play it in linux and windows both. the main thing is that i am reading it in chunks and playing it by passing...

[1 reply] : Use a library like BASS, which is more more that what you need: http:/... (by modoran)

by shanrock

Alternating Between Parent and Child -Pipes

Hi, I need to write a program that alternates between parent and child, which the child printing first. I need to output Parent or Child, the pid, and a random ...

[2 replies] Last: 1. Your process may not output anything because both, parent and child... (by tcs)

by infinity42

keylogger on a raspbian pi

hey guys, So I'm running a cute little robot off a pi, and I'm trying to figure out how to control it with the wasd keys. ergo, i'd like to run the program,...

[1 reply] : you can try to use SDL library. http://www.libsdl.org/release/SDL-1.2... (by Seb26)

by tnavid

compile asn1 file

Hi, i have an asn1 file from "http://tools.ietf.org/html/rfc5272" -> "Appendix A. ASN.1 Module" -> "EnrollmentMessageSyntax.." i use asn1c to compile it to...

[3 replies] Last: You haven't actually asked for specific help. To answer your question... (by kbw)

by haglerchristopher

Connection Issue from outside the network

I created a program that servers ascii art animations over telent. I am able to connect on the same network using telnet localhost 2023 . However, Once i try t...

[4 replies] Last: I was not able to ping the host, so I looked at the port forwarding se... (by haglerchristopher)

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UNIX/Linux Programming - November 2014