How to find files with no file extension?

[Rytron]

Hi.
How do I find files with no file extension?
For example, how do I find files such as shop-list as I want to rename it to shop-list.txt
I like to have all files with their appropriate file extension.

[KeLa]

have you tried this:

mv ./shop-list ./shop-list.txt

[Rytron]

have you tried this:

mv ./shop-list ./shop-list.txt

Hi KeLa.
You misunderstood me, I used the file shop-list as an example. I know how to rename the files, I want a way to find them all. I have many sub folders and don't want to spend ages manually searching through them to find the no extension files.

[tjoff]

To list it for the current directory, maybe this is what you want:

find . -maxdepth 1 -type f ! -name "*.*"

To do it recursively, just remove "-maxdepth 1"

[Rytron]

To list it for the current directory, maybe this is what you want:

find . -maxdepth 1 -type f ! -name "*.*"

To do it recursively, just remove "-maxdepth 1"

Thank you tjoff. Works perfectly.

[3rdalbum]

have you tried this:

mv ./shop-list ./shop-list.txt

Should be:

mv shop-list shop-list.txt

The ./ is redundant.

You might be able to use some sort of mass file renaming program. There are a few around in the repositories.

[Rytron]

GPRename is my favourite.

[KeLa]

You can try this:

find ~/test/ -type f ! -name "*.*" -exec rename -v 's/$/\.txt/' {} \;

It will search all files that have no extension from test directory under your home directory and add .txt extension to all of those recursively.
This worked on my tests very well.

[Rytron]

Excellent code, KeLa.

NOTE: Don't use this in home folder as it will rename hidden files and this will cause problems. Instead use in sub folders ONLY!