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+### Disable paging in postgresql
+
+`\pset pager off`
+
+### Connect to a database
+
+`\c database_name`
+
+### Show tables and sequences in current schema
+
+`\d`
+
+### Describe a table
+
+`\d table_name`
+
+### Show only tables with their size (`+`) in current schema
+
+`\dt+`
+
+### Show databases with their privileges and size (`+`) 
+
+`\l+`
+
+### Show available schemas
+
+`\dn`
+
+### Return back to shell 
+
+`\q`
+
+### List users and their access privileges on databases
+
+`\du`
+
+### List default access privileges
+
+`\ddp`
+
+### List tables, views and sequences with their associated access privileges
+
+`\dp`
+
+### List of roles
+
+`SELECT rolname FROM pg_roles;`
+
+### Detail of a role 
+
+`SELECT * FROM pg_roles WHERE rolname = '...'`