I'm getting ready for an interview where I think my Linux skills could hold me back. I have a background in Windows, Azure, and PowerShell but I've gained a decent understanding of Linux systems. I can write Bash scripts, troubleshoot issues, and deploy Linux containers. However, my hands-on experience with core Linux is pretty limited, especially since in my last SRE/DevOps position, we primarily focused on deploying Docker containers in Kubernetes and didn't dive deep into the containers themselves. I'm looking for insights from more experienced folks about what interviewers might focus on to gauge Linux proficiency. Any advice would be appreciated!
4 Answers
Linux is all about knowing the right tools for troubleshooting. If an interview is heavily focused on specifics like switches for AWK or how to use a one-liner with cat and grep, you might want to reconsider if that's the workplace for you. It sounds like a place just looking to stump candidates, and those environments can be tough to thrive in.
I've been involved in interviews for Sysadmin, Ops, DevOps, and SRE positions for quite some time. One effective method I use is tabletop troubleshooting scenarios where candidates describe which CLI tools they'd use to resolve an issue on a single host. The focus here is on the command line interface. It's not just trivia; for example, most candidates will mention running `top`, and then I'll show them real output for interpretation. I have some guidance tailored for SREs that could also be helpful, particularly under 'Systems Knowledge and Experience'. Check it out on Certomodo's site!
I would concentrate on practical tasks that mirror real-world problems. For instance, debugging network configurations using `traceroute` or `iptables` can be very telling. Consider labs or take-home projects that simulate typical scenarios; they help demonstrate your ability to apply knowledge under pressure. Also, resources like Linux Journey can bridge the gap between theory and practice nicely!
How long is the interview scheduled for? The duration will really influence the depth and breadth of questions they'll likely cover.
It's set for 1 hour and 30 minutes. There will also be sections on CI/CD, Monitoring, and Infrastructure as Code.