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  1. B

    What is client and server in docker?

    Docker client is probably docker CLI as written above Say I've installed Docker in my VM. Which is server? If the server is my VM, why does it require REST API to communicate with docker client cli?
  2. B

    Use dd or cp or rsync or tar for backing up files?

    i see. sadly no rsync on servers we work.
  3. B

    Use dd or cp or rsync or tar for backing up files?

    How do you determine it? Which one to use at which context? I recently took backup using cp command. It was all good. But would there be a better way?
  4. B

    A short term devops course(worth <30hrs of curriculum)?

    As I said in my previous post, I'm learning RHCSA, LPIC etc. I will practice 257 questions of RHCSA, understand them. Along with Nehra Classes RHCSA course. I will practice 1200 questions from LPIC practice questions. The goal is to ensure I know short tricks as well as concepts of Linux. But...
  5. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    LOL I work in pretty big local Company but they will never buy rhel subscription. Our whole work is based on anydesk yet they've not purchased a professional license for anydesk. We use pirated software or community editions in our machines.
  6. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    No. Company uses centos 7. I need to learn what's used in the job. I'll switch to whatever distro the company switches or if I get fired lol.
  7. B

    When do I need to install epel-release?

    I see that for packages like chromium on centos 7, I need to install epel-release. But how do I know when I need to install epel-release? Is there some logic behind it?
  8. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    I'm learning rhcsa on centos 7 as that's what we use in our company(which will probably be migrated to ubuntu).
  9. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    I've already done couple of linux courses and I can do my job easily atm. I want advanced troubleshooting skills so iwtl this rhcsa.
  10. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    Yes I want to learn the contents of RHCSA but not do the exam. I mean not memorizing the answers. But understanding them. It's like practicing math.
  11. B

    I'm scared how long RHCSA will take me to learn. Will learning the exam(not for certificate) be worth it?

    I just bought ghada atef's rhcsa practice questions which contains 257 questions. It'd take me 1 day to learn 1 question. I already know basics of Linux but don't know advanced Linux. So, basically it'll take me ~1 year to read for RHCSA. Would it be worth it at the end? I'd miss so many...
  12. B

    What should I learn next as a devops beginner?

    I'm working as a devops engineer in a big tech company (local). The technologies used here are nginx, linux, sql, redis, docker, glassfish and payara, kubernetes, tomcat, gitlab, jenkins etc. I've learnt linux and sql till date. What should I learn next? I mean the order might be important. But...
  13. B

    Why Can't anyone open a tunnel and access the remote server?

    Currently in my company, we're using VPN->Then RDP. And inside RDP, we access remote server. While some servers are directly accessible, some are not. We need to do tunneling for it. I'm failing to understand the point of tunneling. I've read articles after articles like...
  14. B

    Optimizing grep -rnw . -e "string_to_search"?

    can you explain that command above?I don't think it achieves what I want.
  15. B

    Optimizing grep -rnw . -e "string_to_search"?

    I use this in case filename isn't known at all. I am searching filenames with this command. Is there a way to only include filenames in the output of that above command that I shared? It lists out all the contents of the file and it gets piled up badly.
  16. B

    Optimizing grep -rnw . -e "string_to_search"?

    This greps for all files that contains the string_to_search in current directory. Is there a way to limit it to latest files? Or any way to optimize it? Like changing the command. Say I need to search for files from July only how'd I do it? Assume files are named programs.logs_2023-07-*
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    Not understanding when to use ~/.bashrc, /etc/profile ,~/.bash_profile or ~/.profile?

    I've read tidbits of pages from around 10 books, and I can safely say I am even more confused than before. Earlier I'd just set everything in .bashrc file. LOL. Say I've scenarios like these: 1) I want to set system variables for user "jacky", what should I use? 2) I want to set system...
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