pg_checksums enables, disables, or verifies data checksums in a PostgreSQL database cluster.

Usage:
  pg_checksums [OPTION]... [DATADIR]

Options:
 [-D, --pgdata=]DATADIR    data directory
  -c, --check              check data checksums (default)
  -d, --disable            disable data checksums
  -e, --enable             enable data checksums
  -f, --filenode=FILENODE  check only relation with specified filenode
  -N, --no-sync            do not wait for changes to be written safely to disk
  -P, --progress           show progress information
  -v, --verbose            output verbose messages
  -V, --version            output version information, then exit
  -?, --help               show this help, then exit

If no data directory (DATADIR) is specified, the environment variable PGDATA
is used.

Report bugs to <pgsql-bugs@lists.postgresql.org>.
PostgreSQL home page: <https://www.postgresql.org/>