Guides
Learn the core concepts you need to debug confidently.
An introduction to environment variables and how to use them in Linux, Docker and Kubernetes.
How environment variables work in Docker containers.
How environment variables work in Kubernetes.
How environment variables work in Linux.
In Linux, almost everything is a file.
Troubleshoot namespaces in Linux and Docker containers using nsenter.
Connect Linux commands using pipes to build powerful one-liners.
Redirect STDIN, STDOUT, and STDERR streams when running programs in the Linux shell.
An introduction to signals and how to send them in Linux and Docker containers.
How to send signals to Docker containers.
Inspect system calls in Linux using strace to understand how programs interact with the kernel.