file operations in BASH
 

How can I perform file operations using criteria other than file names?
For instance, using ls but only displaying files with a certain owner or files modified on a certain date? Same for cp, rm, mv, etc.

well, you could do
ls -al | grep root

that would show all the files and directories that either belong to root or are in the root group. That won't work on cp, rm, or mv tho. I can't think of any way to use those like that. Anyone else?

The following will find and list all files owned by root in the current (./) directory

$ find . -user root -exec ls -la {} \;

`man find` for other options.