1. The StackOverflow discussion What's ssh port forwarding and what's the difference between ssh local and remote port forwarding [duplicate] has a good visual comparison/explanation of the difference between the ssh -L (-L stands for local) and ssh -R (-R stands for remote).

2. sshtunnel is a Python implementation of SSH …

General Tips and Traps

1. The permissions of the directory ~/.ssh and its subcontents on both the local machine and the remote server must be properly set in order for SSH login via public key to work. A good pratice is to set the permission of ~/.ssh to 700 (on both …

1. It is suggested that you use osquery or dockeree to query Docker images, containers, etc.

Remove Containers

Note that running containers will NOT be removed by default. This is what users want generally speaking. You can use the option -f to force removing running containers, but use it with caution …

ksnip

Ksnip is a Qt-based cross-platform screenshot tool that provides many annotation features for your screenshots. It is one of the best screenshot applications.

Installation Using snap

sudo snap install ksnip

flameshot

Flameshot is a simple cross-platform screenshot software.

Shutter

Shutter is a good screenshot application for Linux (only).

Tips and Traps

1. Docker on WSL 2 works great. However, the performance of IO is extremely bad if it access the Windows filesystem. For more discussions, please refer to WSL 2 Filesystem .

2. Docker containers launched from a WSL (e.g., Ubuntu) shell will continue to run after the WSL shell …

Benchmark Tools for Linux

phoronix-test-suite is currently the best benchmark tool for Linux. You can use it to figure out the bottleneck of performance of your Linux machine. Please refer to Benchmark Your Linux Machine Using phoronix-test-suite for more discussions.

BCC is a toolkit for creating efficient kernel tracing and …