Linux命令不起作用

Question

Why is this for ((;;)); do sl; done; for ((;;)); do sl; done; not working? I try to list all files in Ubuntu?

Answer 1

Because:

1. The command is ls not sl (ie LiSt)
2. You have an infinite loop, but no requirement for one (in your question) so you really only need.

This:

ls

If you want to run the command over and over to look for changes, you would be better off with:

watch ls

Answer 2

You didn't specify an error message, so it's hard to say, but I assume that it's not working because you don't have a program named sl installed in any directories in your $PATH .

Maybe you meant ls instead?