where to start programming....

[sherwani]

salam
i need help for an assignment in which there is a value stored in a variable which is decreasing with the passage of time. if there is a shut down in system (either normal or abnormal), the current value remains same on next login.
kindly guide me where to start, as i m new in linux but dont send me complete coding. i know little programming in C (windows) just tell me where to start in linux.
thanks

[farhantoqeer]

use any IDE like Kdevelop, Ajunta / Editor OR

Code: Select all

man gcc

[nomankhn]

salam
i need help for an assignment in which there is a value stored in a variable which is decreasing with the passage of time. if there is a shut down in system (either normal or abnormal), the current value remains same on next login.
kindly guide me where to start, as i m new in linux but dont send me complete coding. i know little programming in C (windows) just tell me where to start in linux.
thanks

Dear sherwani,

its best if you will use bash scripting and GCC (Gnu compiler collection), Daily play 5 to 6 hours on these things than you can understand what u want to do.

Regards
Noman Liaquat Khanzada Rajput
Money is not everything

[lambda]

i need help for an assignment in which there is a value stored in a variable which is decreasing with the passage of time. if there is a shut down in system (either normal or abnormal), the current value remains same on next login.

you can run a program that stores the value in a file, and decreases its value over the passage of time, but you can't do it with an environment variable in a useful way.

please explain why you want to do this so we can find a better solution for you.

[fawad]

I think he wants to have the counter persist between reboots. Simplest way I can think of is to write it out to a file and read it in on application startup if it exists.

[nomankhn]

Dear sherwani,

its better to save your value in current running system and then then don't delete those files, lets power off ur system due to electricity, then u read the file

tmp=`cat /var/xyzvlue`

and then use it where you want to , its better to do bash scripting.

Regards
Noman Liaquat Khanzada Rajput
Money is not everything
"Microsoft isn't evil, they just make really crappy operating systems." - Linus Torvalds

[Ihtesham]

salam
i need help for an assignment in which there is a value stored in a variable which is decreasing with the passage of time. if there is a shut down in system (either normal or abnormal), the current value remains same on next login.
kindly guide me where to start, as i m new in linux but dont send me complete coding. i know little programming in C (windows) just tell me where to start in linux.
thanks

man gcc as farhantoqeer said. And then you can sleep

Code: Select all

#include <time.h>
 
void sleep(unsigned int millisec)
{
    clock_t goal = millisec + clock();
    while (goal > clock());
}

//Now update value (in file or whatever) each time you call sleep() in loop