Added examples to help.

Signed-off-by: Stefano Traverso <stefano.traverso@polito.it>
Now reads zipped logs too.

Signed-off-by: Stefano Traverso <stefano.traverso@polito.it>
Deprecated option.

Signed-off-by: Stefano Traverso <stefano.traverso@polito.it>
Added example to the help.

Signed-off-by: Stefano Traverso <stefano.traverso@polito.it>
Removed gzip-base reader and replaced with zcat to improve performance.

Signed-off-by: Stefano Traverso <stefano.traverso@polito.it>