vmstat ps -aux netcat df netstat mstat, traceroute, ping telnet to port to test remote server have port open multiple binaries in /proc/ like /prod/cpuinfo journctl -f /var/log/syslog tail, head, less, grep , sed and awk to filter logs https://superuser.com/questions/117913/ps-aux-output-meaning
lsof means “list open files” which shows all files open by process of the system. More here: http://packetflows.com/resolving-no-free-inodes-left-issue/
Unpack test.tar.gz without man pages or google. Remove all “*.pyc” files from testdir recursively? Search for “my konfu is the best” in all *.py files. Replace the occurrence of “my konfu is the best” with “I’m a linux jedi master” in all *.txt files. Test if port 443 on a machine with IP address X.X.X.X
A careless sysadmin executes the following command: chmod 444 /bin/chmod – what do you do to fix this? I’ve lost my root password, what can I do? I’ve rebooted a remote server but after 10 minutes I’m still not able to ssh into it, what can be wrong? If you were stuck on a desert
In this post, I will share next part of linux interview questions series. What is a tunnel and how you can bypass a http proxy? What is the difference between IDS and IPS? What shortcuts do you use on a regular basis? What is the Linux Standard Base? What is an atomic operation? Your freshly configured
In this post, I will continue with the Linux interview questions series and share the third part of it. What do the following commands do and how would you use them? tee awk tr cut tac curl wget watch head tail What does an & after a command do? Also ? in bash script What
Here are the second part of Linux interview questions: What is the name and the UID of the administrator user? How to list all files, including hidden ones, in a directory? How to delete files older than 7 days from a directory? Which command will show you free/used memory? Does free memory exist on Linux?
I will start a series of Linux interview questions to prepare for the interview. This is the first series and most of the answers are pretty easy to find out through the Google search. I want to share questions to prepare for interviews. For any difficult question, I will share the resources for preparation. I
Continuous IntegrationDevelopers follow CI practices to integrate their code to a single repository on a common branch from which changes are validated by creating build and running automated tests against the build. This way, they know integration won’t fail during release. Every time when change happens, automated CI test the code for any failure. Continuous
Microservice decouple the application into different domains depends on logic of responsibility. Microservices communicate with each other in a network through REST with no knowledge of how other service is working internally. This composition of different service in a framework is called Microservice architecture. As all services are independent of each other, any bug or