On Thu, Mar 06, 2025 at 04:37:56AM -0500, Ron Johnson wrote:
> This statement runs great from the psql prompt.  Does exactly what I want.
> select datname from pg_database WHERE datname !~ 'template|postgres' ORDER
> BY datname;
> But it doesn't work so well from the bash prompt.  Not escaping the "!"
> generates a bunch of garbage, while escaping throws an sql syntax error.

The problem is that ! is magical in bash.

The solution is to not use it. Instead you can easily do:

psql -Xc "select datname from pg_database WHERE not datname ~ 
'template|postgres' ORDER BY datname;"

Best regards,

depesz


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