gexec from command prompt?

Postgresql 12.11

This might be more of a bash question, or it might be a psql vs engine problem.

I want to run this query using psql from a bash prompt:
select format('SELECT ''%s'', MIN(part_date) FROM %s;', table_name, table_name)
from dba.table_structure
order by table_name\gexec

Thus, I added an extra back

$ psql sides -atXc "select format('SELECT ''%s'', MIN(part_date) FROM %s;', 
table_name, table_name) from dba.table_structure order by table_name limit 
5\\gexec"
select format('SELECT ''%s'', MIN(part_date) FROM %s;', table_name, 
table_name) from dba.table_structure order by table_name limit 5\gexec
ERROR:  syntax error at or near "\"
LINE 1: ...) from dba.table_structure order by table_name limit 5\gexec

Removing "\\exec" from the statement, and appending -c "\\gexec" to the psql 
command technically worked, but did not run the commands.

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