The Find command (Command+F) in System 7.5 through Mac OS 8.1 lets you search for a variety of file attributes. There are four additional search options available under the first pop-up menu selection in the Find File dialog box. Hold down the Option key while selecting the "name" pop-up and these additional selections appear:
- Contents: Find files containing a specific string or phrase (up to 30 characters)
- Name/Icon Lock: Find all locked/unlocked files.
- Custom Icon: Find all files that either do or do not have a custom icon.
- Visibility: Find all visible/invisible files.
These additional search criteria are "undocumented features" of Find File. As such, their use is not officially supported.
For information related to invisible files and Sherlock, see the following article:
Article 24986: "
Sherlock, Sherlock 2: Finding Invisible Files or Folders"
Article 30726: "Sherlock, Sherlock 2: Deleting Invisible Files or Folders"