in order to do that I did the following:
Old way:
db_dml import_to_db " copy ml_import_records ( record ) from :temp_filename"
the new way:
exec "$psqlpath/psql -h $host -p $port -U $user $dbname < /tmp/$file_with_sql"
Where "$file_with_sql" contains actually the following
\copy ml_import_records ( record ) from 'temp_file_name'
The First one works fine, but the second doesnt. It seems that no matter what I do, only commands like [db_dml] or [file copy] can "see" the file I am uploading (using ad_form).
Even if I try to do an "exec cp temp_file_name new_file" I get the same error:
"no such file or directory"