If you’re using the psql command line tool, issue this command first:
\pset format wrapped
It should then wrap long lines to your terminal window like so:
test_id | text
--------+-----------------------------
1 | Lorem ipsum dolor sit amet,.
|.consectetur adipiscing elit.
|.. Mauris lorem
You can also set the number of columns to wrap to with
\pset columns 100
and you can change the dots to ellipses with
\pset linestyle unicode
\pset border 1\pset format csv\pset tuples_only\pset format unaligned\pset fieldsep '\t'\pset title <title>