[yz@test ~]$ cd /opt/openGauss/openGauss-server/dest/bin
[yz@test bin]$ ./gs_ctl start -D /opt/openGauss/gauss_data -l logfile
[yz@test bin]$ ./gsql postgres
gsql ((openGauss 1.0.1 build ) compiled at 2021-03-10 10:23:33 commit 0 last mr  debug)
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.

postgres=#