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C program to get Process Id and Parent Process Id in Linux

mahmoud2506
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2022-05-03
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C program to get Process Id and Parent Process Id in Linux

This program will get the Process Id and Parent Process Id of the current Process in C programming Linux.

Here we are using two functions getpid() to get Process Id and getppid() to get Parent Process Id of the current process. These functions are declared in <unistd.h> header file.

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mahmoud2506
2022-05-03
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Process Id and Process Parent Id using C program

/*C program to get Process Id and Parent Process Id in Linux.*/

#include <stdio.h>
#include <unistd.h>

int main()
{
    int p_id, p_pid;

    p_id = getpid(); /*process id*/
    p_pid = getpid(); /*parent process id*/

    printf("Process ID: %d\n", p_id);
    printf("Parent Process ID: %d\n", p_pid);

    return 0;
}

Output:

Process ID: 1298
Parent Process ID: 879

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