Stress Testing Your CPU with Yes on Kali Linux

Kali Linux is a popular operating system among hackers and cybersecurity professionals, and one of its many features is the ability to stress test your CPU. Stress testing your CPU can help identify performance issues and troubleshoot intermittent problems that may arise.

The `yes` command is a simple workload generator that allows you to impose a configurable amount of stress on your system's CPU. With `yes`, you can perform memory, I/O, and disk stress tests in addition to CPU stress testing.

To begin, enter the following command into your terminal:

```

$ for i in $(seq $(getconf _NPROCESSORS_ONLN)) do yes > /dev/null & done

```

This command will create a `yes` process on each processor core of your machine. On an idle system, each `yes` process will utilize 100% of a CPU core.

If you want to stop the `yes` processes and return to normal CPU utilization, simply enter the following into your terminal:

```

$ killall yes

```

It's also advisable to use top, htop or some other program to monitor the CPU utilization in order to verify that it is reaching 100%.

One of the benefits of using `yes` for stress testing is that it does not require root privileges to run. Additionally, it requires only standard utilities that come out of the box on GNU/Linux systems, so no installation of additional programs or libraries are needed.

If your processor supports hyper-threading and it is enabled, `yes` will create twice as many processes, as this is necessary to fully maximize the CPU utilization.

Stress testing your CPU with `yes` can be very useful for troubleshooting purposes. Intermittent issues often do not become reproducible until the system is under heavy load, sometimes for a prolonged period of time. By stress testing your CPU with `yes`, you may be able to reproduce an issue that would otherwise be difficult or impossible to troubleshoot.

In this article, we have demonstrated how to stress test your CPU using the `yes` command on Kali Linux. With this simple and effective tool, you can identify performance issues and troubleshoot intermittent problems that may arise.

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