System Monitor
In this project, I created a simple system monitor using c++. As shown in figure below, the system monitor provides the system information and processes information.
The information is obtained from files in linux system. The path of these directories are presented in the table below.
| Info | directory path |
|---|---|
| OS | /etc/os-release |
| Kernal | /proc/version |
| CPU | /proc/stat |
| Memory | /proc/meminfo |
| Total Processes | /proc/stat |
| Running Processes | /proc/stat |
| Up Time | /proc/uptime |
Note that the memory usage shown in this system monitor is non-cache/buffer memory.
The files containing processes information are located in /proc/ directory. The PID is shown as the directory name in /proc/.
| Info | directory path |
|---|---|
| USER | /proc/[pid]/status, /etc/passwd |
| CPU Usage | /proc/[pid]/stat |
| Memory Usage | /proc/[pid]/status |
| Up Time | /proc/[pid]/stat |
| Command | /proc/[pid]/cmdline |
Compiling and Running
Compiling
This project requires ncurses for displaying outputs. Install this library by command in terminal:
sudo apt install libncurses5-dev libncursesw5-dev.
After installation of dependencies, clone this project and create build directory in root of the project.
mkdir build && cd build.
Then run cmake .. and make in build directory.
Running
The executable is in results/ directory. To run the system monitor, go to root directory of the project and run command:
./results/monitor.
Credits
Starter code for System Monitor Project in the Object Oriented Programming Course of the Udacity C++ Nanodegree Program.