Batch change file extensions in Mac OS X?

Question

I used wget to download a website into a folder. When files have the same names, wget stores the new one as name.extension.#

Now I have hundreds of files like 1.jpg, 1.jpg.1, 1.jpg.2, etc.

How can I change every file with a .jpg* extension into plain .jpg?

EDIT: I used freeware NameChanger, which let me organize by EXIF data before changing the extension.

Solution 1

Use Name Mangler to do this. Shareware, but: Trial version: Name Mangler will work for 25 launches without limitation.

You can see the original and future file names on the left, and the configuration of Number Sequentially I used on the right. Important here is to manually define .jpg suffix, and not appending the original extension.

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The free NameChanger also can do this. (thanks slhck!)

Solution 2

I'm assuming you want 1.jpg.1 to be renamed to 1-1.jpg, or you'll lose them. Quick and dirty comes to mind: just use sed to construct a shell script on the fly and have sh run it:

$ ls -1 *jpg* | sed -e 's@\(.*\)\(\.jpg\.\)\(.*\)@mv \1\2\3 \1-\3.jpg@' | grep ^mv | sh 

Strongly suggest you check the output just before the sh to make sure it's actually going to do the right thing.

Comments

[Thalecress]

I'm pretty sure that I'll lose

[brevno]

This doesn't work with filenames that have spaces or some other special characters.