Shell scripting is the one skill that separates DevOps engineers who panic during incidents from those who fix them in minutes.
I spent 8 years in Linux before I got into DevOps.
I wrote a minimalistic ebook on Linux shell scripting that will give you enough knowledge to start writing any shell scripts
I'm giving it away for free.
Follow me + retweet + comment "Living devops" and I'll send you the ebook in DM.