As I've said, everything on Linux is a file, so lsof isn't limited to the local filesystem. You can also use it for network debugging. For example, suppose you need to know what process uses a particular TCP por
You learned how to use ps in 2.16 Listing and Manipulating Processes to list processes running on your system at a particular time. The ps command lists current processes, but it does little to tell you how processes change over time. Therefore, it won’t really help you to determine which...
The ps command has many options. To make things more confusing, you can specify options in three different styles—Unix, BSD, and GNU. Many people find the BSD style to be the most comfortable (perhaps because it involves less typing), so we’ll use the BSD style in this book. Here a...
How to use lsof command to Find Open Files The lsof utility can help identify which files are being used by any given application, which network ports are open, and much more. A process would show up in top or ps aux, but the executable may not seem to exist. Using lsof, we could ...
If you are having issues reaching your website, you may need to flush your Linux DNS cache. Learn how to do that for various Linux system configurations.
How to Use the rm Command to Delete a File in Linux? Sometimes, before removing a directory, you may need to delete files within it manually. Step-by-Step Instructions: Open your terminal. 2. Navigate to the directorycontaining the file: ...
However, you can use a range of other commands on a Linux machine which will let you check which ports are open in your Linux environment, and ensure they are ready to receive communication from other machines. We will cover three in the following section – Isof, netstat and nmap. ...
Two other utilities for Linux, similar to top, offer an enhanced set of views and features: atop and htop. Most of the extra features are available from other utilities. For example, htop has many of abilities of the lsof command described in the next section. ...
To view the PID of the process that is listening on port 8080, use the following command: ss -pl 8080 Check open port with lsof command in Linux Lsof is a command that lists all open files. This includes network connections, so it is perfect for our needs. To use lsof, simply type ...
[ For more tips on Linux administration, readHow to use the lsof command to troubleshoot Linux. ] Sobre el autor Giancarlo del Rossi Giancarlo del Rossi, is a Software Maintenance Engineer at Red Hat. He has over 30 years of experience in the Information Technology environment and most of ...