list all file extensions in a directory

ls -Xp /path/to/dir | grep -Eo "\.[^/]+$" | uniq
If we want files with more than one extension, like .tar.gz, only appear the latest, .gz: ls -Xp /path/to/dir | grep -Eo "\.[^./]+$" | uniq
Sample Output

By: karpoke
2010-08-12 16:32:54

11 Alternatives + Submit Alt

What Others Think

You have to sort results before uniq. echo -e "1\n2\n1" | uniq From man uniq : Note: 'uniq' does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use `sort -u' without `uniq'.
dooblem · 626 weeks and 5 days ago
@dooblem, I think that it's not necessary because the flag -X of ls sorts alphabetically by extension, so repeated lines are adjacent.
karpoke · 626 weeks and 5 days ago
Here shared the coding for listing all file extensions in a directory. This is a great source for me as a programmer. engagement rings I learned so many methods that are so simple that can be implemented while programming.
TwanGrey · 26 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

You must be signed in to comment.

What's this? is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.


Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: