I am using OpenSUSE Leap. I tried XFS_repair(8) but it shows "syntax error near unexpected token 8". Why can't they make it like Windows? What am I actually supposed to do? Why no examples? That's why I dislike CLI. It's 80's. Just with GUI shortcuts is much faster, don't you think? No one has asked about this error. It showed no results on Google.

a "syntax error" means you didn't "use the command" correctly.

try typing
see how you go.

I use ext4 as a journaling File system, so I haven't had to do this, yet.

If it was easy, everybody would be doing it.

Don't give up. :-)

The "(8)" is just the documentation section where the manpage is stored. If you type "man 8 XFS_repair" (or, probably, just "man XFS_repair") in a terminal window you should see the manual page for that command.

The reason that "(8)" is included in the text you were reading is that occasionally the same name appears in two different sections, such as "mount(8)" the adminstrative command vs. "mount(2)" the system call that actually does the work. Yes, it's confusing until you realize that.

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Did you try it without the 8?
The manual doesn't mention an integer, or a pair of parens for that matter...

I would guess the reason you dislike it is you don't know how to use it. It's a C api, so just like programming, it's got a learning curve you may not want to invest in.
No. I've never met a person who can work on the CLI and prefers to click the buttons. It's unbelievably slow and uninformative and you can never really be sure what the thing just did.
It's a little like using a hatchet when you really need a scalpel.
Shell/Shell scripting is a very helpful skill if you're going to work with Linux, however it's not required.
Ubuntu, would give you a more "Windows-like" experience. Suse is an engineering platform, it designed for a user with a base level competence, it's probably not the Distro for you.

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although it is a bit offtopic here, but probably helps you to understand: http://linux.oneandoneis2.org/LNW.htm

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