Ubuntu – How to list text files without a .txt file extension

command linefile formatls

For example, how can I replicate:

ls *.txt

when my text files are missing the .txt ending, and as far as extensions go appear the same as many other types of file?

Alternatively, is it possible to list specifically just the files which have NO file extension?

Best Answer

To match files that do not have an extension at all, you can use the command

ls | grep -v '\.'

To match files that do not have a .txt extension, you can use the command

ls | grep -v '\.txt'

This will pass the list of files in the current directory to grep, which will remove all file names that have a . (or .txt for the second command) in them.

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