implement ps command in linux using C

This tutorial is to help you to implement ps command in linux using C.
ps command provides the list of all the currently running processes in the system.

ps command is also one of the most useful bash command
and is implemented in various ways.

It can help us to see the list of all

• info about the threads
• security information
• each process running as the root.
• processes with their particular PIDs

For eg,  open up the terminal and write the command
root@kali:~#  ps   -e
It will print all the currently running processes.

So let's implement ps command using C
Below is the simple C code to pace up our learning process

---

#include<stdio.h>
#include<stdlib.h>
void main()
{
printf("It'll print all the currently running processes");
system("ps -e");
}

---

system is the C library function to excute the bash command

I've saved it by named pscommand.c on Desktop
the output is shown to you by the next screenshot.

how to compile c program in linux

Let use our ps command more briefly in C.
Here is another C code to implement ps command.

---

#include<stdio.h>
#include<unistd.h>
void main()
{
printf("It'll print all the currently running processes in the long format\n");
execl("/bash/ps","ps","-el",NULL);
}

---

• execl executes list of command line arguments.  Last parameter is end of argument and always be NULL
• -l in ps is used to print the data in long format
• I've saved this file with name pscommand2.c on my desktop

So guys, it is all about to implement ps command in linux using C.
Remember, there is no end to this.
So just go deeper and deeper and learn more.