UNIX/Linux Programming - C++ Forum

Hey, I'm trying to make a basic keylogger on my Mac to pull a prank on my friend. Anyway, I need to get the current keystate, and the application should be runn...

[no replies]

by jiwan tamang

Shell Script

Hi I am trying to make a shell script in the Ubuntu terminal that can read a password for the text file and shut down the computer automatically after 2 or 3 ho...

[1 reply] : man sudo && man shutdown (by Athar)

by incognito

Need help with setting env variable inside system call

I have two processes. I want to set an environment variable in one process and check it in another in my C program. //process 1 if(count> 1) { sys...

[1 reply] : Environments are inherited, it's not a global resource. The two apps ... (by kbw)

by Katma

SegFault before main even runs?

I'm getting a segfault before the program even gets to main. It compiles just fine, but not beyond that. Here's the program. I cut out the functions to find...

[4 replies] Last: I'm using the compiler built into my school's csc server. Linux clas... (by Katma)

by MartIra

using pipe

Please, help me to understand how to use pipe!! I write the console application under Unix. Here is the text: char buff ; FILE *stream; str...

[no replies]

by MrChefman

Difference of calling external application and library

Hello, is there any difference in regard to attributes and autorization between calling an external program out of a C++ application or calling a library fun...

[1 reply] : If your application is running as root, anything it does is done as ro... (by Zaita)

by cherraqi

delete uesr

how can i delete some users from terminal

[2 replies] Last: that's right!!!! (by cherraqi)

by Ritu15

Makefile

please tell me the code of make file for my following program.... tha Employee.cpp file is #include "Employee.h" Employee::Employee(){} Employee::Employee...

[3 replies] Last: You should put the dependency (by ne555)

by Ace93

Ostream&

Editing code for class and i get the error: basic_demo.cpp: In function 'void print(std::string*, int, std::ostream&)': basic_demo.cpp:72:54: warning: default ...

[4 replies] Last: I've tried: 26 bool add(std::string arr , int &n, int maxN, std::str... (by Ace93)

by Ronny Bismark

Detect mouse click in Terminal (Ubuntu server)

I want to solve a pretty easy problem. I just want to detect a mouse click under Ubuntu Server(without GUI respectively windows management). Therefore, I use Nc...

[3 replies] Last: ertt (by IraMelton)

by cscho0415

api and g++

so I have to use an api for this project and I guess I am to get a .so for the library. I have been using g++ and command line to compile this project. My quest...

[2 replies] Last: Have you tried Google? http://ehuss.net/shared/ (by kbw)

by deadpickle

Setting a value of nested class in shared_ptr

I am trying to use a vector of shared_ptr (boost lib) that points to a class with a nested class (hope I got all that right). So far I have: typedef boost::sh...

[3 replies] Last: @deadpickle (aside) if you're doing the allocation and copy just to ... (by andywestken)

by liquidfuzz

I need chars!

I'd like to make a mapping of strings to chars. I'm going to use a hard coded map in a program to compress data. Something like this: a = "str1" b = "str2" e...

[1 reply] : I don't clearly understand what you intend to do, but you can use a l... (by tejashs)

by gliese

Is there anyway in which I don't need to specify the linker when compiling?

For example, If my c++ code included math.h so that I can use sin() . When I compile my code, I need to add the linker, that is : g++ main.cpp -lm ...

[3 replies] Last: You can use a Makefile ! (by SKZ81)

by Carnez

discrepancy with multiplication

I am using the armadillo c++ linear library and when I try to multiply a scalar with a vector, I receive different values each time. Any suggestions on the issu...

[1 reply] : You should post more code. - freq declaration and initialisation - how... (by SKZ81)

by raduh

Declaration syntax error

I wrote the following library for my mouse: #ifndef __MOUSE_H #define __MOUSE_H #include <dos.h> #define LEFT 1 #define RIGHT 2 #define CENTER 3 class M...

[2 replies] Last: - Are you compiling in EFFECTIVE C++ mode ? - If yes, try to rename to... (by SKZ81)

by Amnesiac

Linux-friendly laptops

I know it's more of a hardware-related question but are any particular brands more linux-friendly/compatible than others? I'm thinking HP, Sony or Samsung but t...

[12 replies] Last: I have an older Macbook with Intel dual core processor that Apple no l... (by powerup777)

by ResidentBiscuit

Am I using threads right?

So I never program with threads, and for some reason they just confuse the hell out of me when trying to use them. Anyway, I have an assignment that passes a bu...

[8 replies] Last: It seems to try and teach you how to start threads, not make it in a, ... (by liquidfuzz)

by majidkamali1370

Read ini files

Hi. Windows API has some functions for reading *.ini files GetPrivateProfileString GetPrivateProfileInt Is there something similar in linux? or maybe wi...

[5 replies] Last: I apologize, that was my mistake, I hav to say you can use! (by barbodar)

by incognito

Need immediate help on casting/storing values in buffer

I have a structure type, let's say Telephone typedef struct { string dir_no; unsigned char msg_ref; }Telephone; //I create a pointer to it...

[2 replies] Last: Thanks a lot Moschops for a quick reply. Actually the structure is muc... (by incognito)

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UNIX/Linux Programming - November 2012