How to delete all files expect specific file type in the folder using command line [closed]

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I have lot of files in specific folder.

I want to delete all files expect *.html file type in that folder.

Is there any way to do this in command line? I am using Linux.

Answer 1

I'll assume that you refer to linux command line, please update your question if not.

find ./folder/to/look/in -not -iname '*.html' -exec rm {} \; 

Here's an explanation of what this does

edit

If you have not too many files then you might want to make find execute one single rm command. You can do that with using + instead of ;

find ./folder/to/look/in -not -iname '*.html' -exec rm {} +

Here's an explanation of this one