5.3. Command line usage

5.3. Command line usage
	5. <merge>/merge

Synopsis

java emma merge {-in data files...} [-out data file] [common options]

Options

[common command line options]

-in, -input meta/coverage data files...: This repeatable option selects an arbitrary mix of metadata and coverage data files to be merged.
-out, -outfile output merge data file: Overrides the location to store merged data (default: file coverage.es in the current directory).

Examples

Collect all EMMA metadata and runtime coverage data files and merge them into a single session file:
```
>java emma merge -in coverage.em -in coverage.ec -out coverage.es
```

Compact a single data file:

>java emma merge -in coverage.es -out coverage.es

Diagnostics

The default EMMA command line tool behavior is not to use System.exit() on exit unless an explicit -exit option is specified. If that is done, the error codes returned via System.exit() are as follows:

`0`	Successful completion.
`1`	Failure due to incorrect option usage. This error code is also returned when command line usage (`-h`) is requested explicitly.
`2`	All other failures.


5.2. ANT usage		6. Defining the instrumentation set