When you run tuning in MOSES, for example you running this script:

nohup nice ~/mosesdecoder/scripts/training/mert-moses.pl \
~/corpus/news-test2008.true.fr ~/corpus/news-test2008.true.en \
~/mosesdecoder/bin/moses train/model/moses.ini --mertdir ~/mosesdecoder/bin/ \
&> mert.out &

then you want to know the output of mert.out, you can use this command in another terminal:

tail -f mert.out

The tuning process will be shown in second terminal. So, you will know whether the tuning script are running or have an error!

 

Source:

1. http://www.statmt.org/moses/?n=Moses.Baseline