tee Command Generator

## What is tee?

`tee` reads from standard input and writes to both standard output **and** one or more files. It's the standard way to capture pipeline output to a file while still seeing it on screen, or to fan out a stream to multiple destinations.

## How to Use

1. **Set Options** (optional): `-a` to append instead of overwriting. 2. **Specify File**: Enter the output file (or files, by listing them manually in your shell). 3. **Copy & Run**: Pipe a command's output into the generated `tee` command.

### Append with `-a` Add to a log instead of overwriting it:

``` echo "$(date) start" | tee -a run.log ```

### Capture while viewing Show a long build log on screen **and** save it:

``` make 2>&1 | tee build.log ```

### Fan out Tee to multiple files at once (manually add file arguments):

``` cat data.txt | tee a.txt b.txt c.txt ```

### Combined with sudo Write to a root-owned file:

``` echo "config" | sudo tee /etc/myapp.conf ```