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
.tar.gz
.py
.pyc

0
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 · 423 weeks and 2 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 · 423 weeks and 2 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?

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