Linux

Technical Cheat Sheets for Developers – RHD Blog

https://developers.redhat.com/blog/2017/05/23/technical-cheat-sheets-for-developers/ Here are the cheat sheets available today: Linux Commands Cheat Sheet, Advanced Linux Commands Cheat Sheet, Wildfly Swarm Cheat Sheet, Containers Cheat Sheet, MongoDB Cheat Sheet, Kubernetes Cheat Sheet and the Eclipse Vert.x Cheat Sheet.

4 Vital Tips for Getting the Most Out of Traceroute

https://blog.paessler.com/4-vital-tips-for-getting-the-most-out-of-traceroute Anyone – even users with zero networking experience – can run a traceroute. All you need is a command prompt and a destination device. Yet, despite how easy it is to use, its results are often misunderstood. To be able to make good use of traceroute for network troubleshooting, you need to understand two

Postage-Stamp Linux Board

EEJournal reports that Microchip’s new SAMA5D27 is almost a postage stamp that runs Linux. It is a fully realized microcontroller module that measures about 40mm on a side. It costs about $39 in small quantities. I wrote about this board in Finnish to Uusiteknogia.fi magazine.

A step-by-step guide to Git | Opensource.com

https://opensource.com/article/18/1/step-step-guide-git If you’ve never used Git, you may be nervous about it. There’s nothing to worry about—just follow along with this step-by-step getting-started guide, and you will soon have a new Git repository hosted on GitHub.

How To Debug a Bash Shell Script Under Linux or UNIX

https://www.cyberciti.biz/tips/debugging-shell-script.html Shell scripting debugging can be a tedious job (read as not easy). There are various ways to debug a shell script. Read this article see how to debug a bash script running on Linux and Unix using various methods.

OpenSSH Server Best Security Practices

https://www.cyberciti.biz/tips/linux-unix-bsd-openssh-server-best-practices.html This page shows how to secure your OpenSSH server running on a Linux or Unix-like system to improve sshd security. Read also how to only allow ssh login using SSH keys https://www.cyberciti.biz/faq/how-to-disable-ssh-password-login-on-linux/

Escape Docker Container Using waitid() | CVE-2017-5123 | Twistlock

https://www.twistlock.com/2017/12/27/escaping-docker-container-using-waitid-cve-2017-5123/ In 2017 alone, 434 linux kernel exploits where found, and as you have seen in this post, kernel exploits can be devastating for containerized environments. This is because containers share the same kernel as the host, thus trusting the built-in protection mechanisms alone isn’t sufficient. Make sure your kernel is always updated on all

Monitor Linux with Grafana | Opensource.com

https://opensource.com/article/17/8/linux-grafana?sc_cid=70160000001273HAAQ  This is a basic walkthrough for how to set things up to monitor Linux system and networking. This is a basic install that incorporates collectd, InfluxDB, and Grafana on the same host.