Sort and Rename Files
It's easy to rename a group of files using the Finder instead of wasting time doing them one by one.
First, select the top file in a list and then hold the shift key and click on the bottom file in the list to select the files you wish to rename.
Then right click (or Ctrl-click) to get the pop-up menu:

Select the "Rename…" item about a third of the way down.
The three options you have are:
- Replace Text
- Add Text
- Format

Selecting "Replace Text" gives you the Find and Replace options:

Selecting "Add Text" gives you the add text option. Note that you can choose where to place the added text, in this example it is after the name:

Selecting "Format" gives you three format options options:
- Name and Index
- Name and Counter
- Name and Date

Name and Index

Name and Counter

Name and Date
This makes changing the names of a lot of files very easy..For example; photos from a vacation. Put them in a sensible order with sensible names instead of the ones your camera or iPhone give you.