I have a directory test1

this is a empty directory

i want to rename it to test.

whats the command ?

mv

*lame spam filter avoidance text*

did you mean mv test1 test

(i)does it rename the directory ?

(ii)And is not mv works for files ? these are directory.

Yes, it will rename the directory

mv works for both directories and files.

There is usually also 'rename' command available, but mv is shorter to type and works on files (directories are one sort of files too on Unix systems - remember that) so why not. It might sound odd that you rename files/directories with 'mv', which usually is used for moving stuff, but if you think about the thing closely, you notice that moving a file (or a directory) into the same directory where it originally was but under a different name means effectively just renaming it.

Not sure about the deep ways of work how rename and mv work when renaming files, but the result stays same.

The general command I have always encountered is: rename pattern1 pattern2 where_to_apply

But I know that there is another version of rename which I never bothered to learn.

"mv" is easy but rudimentary. If you were using rename, you would use something like this:You could also sayOnce you get it, it is lot more fun