When would you use `2>` vs `&>`?

That's a very insightful question about distinguishing between 2> and &>! It highlights an important nuance in shell redirection.

Here's a breakdown of when you would use each:

What it does: This operator specifically redirects the error output of a command to a file. Standard output (the normal results of the command) will still go to the console.
When to use it:
- Logging errors separately: When you want to capture only the error messages generated by a script or command to a specific log file, while still seeing the successful output on your screen or redirecting it elsewhere.
- Debugging: To easily find and review only the problems that occurred without sifting through regular output.
- Example:
```
ls /nonexistent_directory > successful_output.txt 2> error_log.txt
```
  In this example:
  - ls: cannot access '/nonexistent_directory': No such file or directory (the error) would go into error_log.txt.
  - successful_output.txt would remain empty (as there is no successful output from ls for a non-existent directory).
  - If ls did have successful output (e.g., ls /): successful_output.txt would get the directory listing, and error_log.txt would remain empty.

What it does: This operator redirects both the normal output and the error output of a command to the same file. Nothing will appear on your console.
When to use it:
- Comprehensive logging: When you want to capture everything a command or script outputs (both successes and failures) into a single log file without anything showing up in the terminal.
- Silencing output: When you want to run a command and don't care about seeing any of its output, but still want to know it ran (e.g., redirecting to /dev/null).
- Example:
```
ls /nonexistent_directory &> all_output.txt
```
  In this example:
  - all_output.txt would contain ls: cannot access '/nonexistent_directory': No such file or directory.
  - Nothing would be printed to your console.

In summary:

Use 2> when you only care about the errors and want to separate them from successful output.
Use &> when you want all output (both successful and errors) to go to the same place.

This distinction allows for very flexible and powerful control over handling command output in Linux! Great question!