How would you search the entire file system for a file named today.odt?

correction: This is in Linux.

Try

find / today.odt
it will search all directories under root, including links.
For more options, type
man find
to read about the command find on Linux (man for manual).

Would this also work: find / -name "today.odt " -print

Yes it would.

The quotes are used to delimit regular expressions, for example if you want to find all files ending with .h or .c, you would type in
find / "*.[ch]" -print
If you don't put any metacharacters for regular expressions, it will be interpreted as is.

To search the entire file system for a file named "today.odt," you can use the command-line interface or the graphical user interface, depending on your operating system. Here's how you can do it:

Command-Line Interface (Windows):

1. Open the Command Prompt by pressing the Windows key + R, typing "cmd," and pressing Enter.
2. Change the directory to the root of the file system by typing `cd \` and pressing Enter.
3. Enter the following command to search for the file:
`dir /s /b today.odt`
4. Wait for the search to complete. The Command Prompt will display the path(s) of any matching files found in the file system.

Command-Line Interface (Mac/Linux):

1. Open the Terminal application. You can find it by searching for "Terminal" in the Applications folder on a Mac or using the Ctrl+Alt+T shortcut in many Linux distributions.
2. Change the directory to the root of the file system by typing `cd /` and pressing Enter.
3. Enter the following command to search for the file:
`find / -name "today.odt" -type f 2>/dev/null`
4. Wait for the search to complete. Terminal will display the path(s) of any matching files found in the file system.

Graphical User Interface (Windows):

1. Open File Explorer by pressing the Windows key + E.
2. In the search bar at the top-right corner of the File Explorer window, type in `today.odt`.
3. Wait for the search to complete. File Explorer will display any matching files found in the file system.

Graphical User Interface (Mac):

1. Open Finder by clicking on the Finder icon in the dock.
2. In the search bar at the top-right corner of the Finder window, type in `today.odt`.
3. Wait for the search to complete. Finder will display any matching files found in the file system.

Note: The search process may take a significant amount of time if your file system is large and contains a lot of files, so please be patient.