[root@127-0-0-1 nginx]# gzip  -v  access.log-20190328

  access.log-20190328:	 95.8% -- replaced with access.log-20190328.gz

[root@127-0-0-1 nginx]#

[root@127-0-0-1 nginx]# gzip -dv  /var/log/nginx/access.log-20190328.gz

access.log-20190328.gz:	 95.8% -- replaced with access.log-20190328

[root@127-0-0-1 nginx]#

[root@127-0-0-1 nginx]# gunzip -v access.log-20190328.gz

  access.log-20190328.gz:  95.8% -- replaced with access.log-20190328

[root@127-0-0-1 nginx]#

[root@127-0-0-1 nginx]# gzip -V

gzip 1.5

Copyright (C) 2007, 2010, 2011 Free Software Foundation, Inc.

Copyright (C) 1993 Jean-loup Gailly.

This is free software.  You may redistribute copies of it under the terms of

the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.

There is NO WARRANTY, to the extent permitted by law.

Written by Jean-loup Gailly.

[root@127-0-0-1 nginx]#