I strive to speak multiple languages, but I think it still worthwhile to be really good at my primary language of English.
Same with computers and servers. I interact with a lot of them, but my primary computer that I use >80% of the time is worthwhile to optimize with some tooling that's not available on all the others.
Some folks grew up on systems that could fail at any time and leave them with nothing but the tools in /sbin to fix it with. No /usr, no bash/zsh, just sh and vi if you were lucky. You learn to love the cool new things, but you still have a mental bag packed with fsck and ed in case you need to bug out.
It's silly, really because no systems are like that any more, but the things you learned at 2am when you were 22 tend to stick with you.
As we're in a zsh story, I'll point out it comes with a clever file renaming interface out of the box¹. It allows full access to all the advanced glob operators zsh provides too².
On the second one - if that’s in code than a good IDE will not only do it with a single keypress, but will also (optionally) do it intelligently eg change only in the code, not the comments, show you a browseable preview, and offer undo should you get it wrong.
I like the shell but I also think IDEs are underrated.
You bet wrong, because naturally approaching 50y, I have my tools for quite some time, for the stuff I care about, not random examples on the Internet.
A UNIX shell is a very bad approximation of a real programming language REPL.
It is no accident that sh scripts turn into Perl, Python, Tcl, Lisp,... when one wants to keep sanity.
