process manager in linux??

[samk_2104]

hi i want to make a process manager in linux which shows all current processes its users,applications running them,cpu usage and can kill them...hw shld i proceed??plzzz help

[devils casper]

Install htop.
Which distro are you using?

[daark.child]

There are already many apps that do that. Top, htop, ksysguard etc. I personally prefer ksysguard and htop.

[samk_2104]

i knw them but i wnt 2 make a s/w myself which does all dis so in dat context hw shld i proceed languages i knw c,c++ and python

[Ben Cotton]

If you want to write your own, the easiest way to do that would probably be to take the source code of one you like and re-write it to act how you want.

[Cabhan]

If you want to write your own from scratch (as some sort of exercise or whatever), the problem reduces to "how can I figure out what processes are active, and information about them?".

The answer, dear reader, is the proc filesystem. Under /proc you will find lots of information for every process: there are a bunch of numbered directory: each of these represents a process (the number is the PID). In this directory, you can find information about memory and CPU usage, amongst other things.

So I suggest you read up on proc. It has a man page, and I'm sure there are many guides online.

[samk_2104]

thnx but wld it betta to use system calls or shell commands in the code???

[i92guboj]

thnx but wld it betta to use system calls or shell commands in the code???

System calls, and /proc fs is all you need.

It's not a good idea to fork shell commands from a program to monitor processes, because then you will be getting more useless processes in the monitor.