A destructive and non-destructive way to roll back a commit would be using: #DESTRUCTUVE HEAD~1 refering to the commit before the current one git reset --hard HEAD~1 #NON-DESTRUCTIVE new commit that undoes the changes of the most recent commit git revert HEAD…
Sometimes it's easy to forget the power of awk. When faced with a task, it's often easy to resort to writing a program or script. This isn't a bad thing, but realizing some tasks can be handled with awk, could save you time. Awk…
This post will be quick, but I still wanted to write this one regarding grep. Most times I see grep being used after a pipe to find or sort output and rarely as a starting command. One of my favorite abilities of grep is that it can recursively search through…
Sometimes I get into the frame of mind that docker and the dockerd service is very isolated from the host that runs it. I'll be using common docker commands such as docker logs, docker ps, docker stats or inspect to get a better understanding on what happens with…
I think everyone goes about viewing and modifying linux storage in there own way or they just forget, and use one of commands that all seem to blend together. Maybe its just me, but I always find df -h, lsblk & fdisk to blend together, so I thought writing a…
Its easy to get confused between OAuth and SAML and how they differ when talking about SSO protocols. I found a great, simplified breakdown online by a reddit user. "SSO - the experience of logging in one place and being automatically logged in somewhere else Federation - authenticating from…
umask (user file creation mask) is a setting in Linux to control default file permissions for newly created files and directories. By default a file in Linux is created 666 permissions (read, write, but no execute) & directories are created with 777 permissions ( read, write and execute). umask subtracts the…
When setting up Linux monitoring, you may need to a way to spike CPU or put pressure on the hosts memory to test metrics and alerting. My use case was with Zabbix and having their agent installed in machines. Their Linux template comes with monitoring and triggers that can send…