Unzip file for practice

Hi Team,
For practice I want tp unzip a txt file but unable to do so,could you please help me to un zip the file.
The zip file is cd /data/nyse_all/nyse_data/NYSE_1997.txt.gz and want to unzip and copy the file to hadoop fs - ls /user/subhajit1983
Kindly help.

Thanks & Regards,
Subhajit