removing hidden .swp files
 

Have a habit of shuting down computer imporperly.

have a few hidden file:
.file1.txt.swp
.file2.txt.swp
.file3.txt.swp

How do I delete all *.swp files together in one commands.
A bit tiring deleteing it one by one.

rm .*.swp

That ought to work ;)

As a side note, unless it's a hardware problem causing you to shut down improperly, I strongly suggest you try to break the habit. In a worst case scenario, you could leave critical files on your hardrive in an unreadable state.