postgres=# \du
List of roles
Role name | Attributes | Member of
-----------+------------------------------------------------+-----------
chris | | {}
myusername| | {}
postgres | Superuser, Create role, Create DB, Replication | {}
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prog.rb:3: syntax error, unexpected tIDENTIFIER, expecting keyword_do or '{' or '('
...s | Member of
... ^
prog.rb:5: syntax error, unexpected '|'
chris | | {}
^
prog.rb:6: syntax error, unexpected '|'
myusername| | {}
^
prog.rb:7: syntax error, unexpected ',', expecting $end
postgres | Superuser, Create role, Create DB, Replication | {}
^