Batch remove extensions in Ubuntu
Sometimes you will want to batch remove extensions from a load of files:
for i in $(ls *.png); do mv $i ${i%.png}; done
If you want to remove extensions from files with a .txt extension then you would replace the two instances of .png in the script above with .txt.
You can take the extension off of all files using the following:
for i in $(ls *.*); do mv $i ${i%.*}; done
I also extended it by using it for a batch change of extensions rather than just removing the extension:
for i in $(ls *.html); do mv $i ${i%.html}.htm; done
Note the extra .htm after the curly braces in the above command.