pruebas=# select current_date
pruebas-# ;
 current_date
--------------
 2025-02-17
(1 row)

pruebas=# \dx
                                 List of installed extensions
  Name   | Version |   Schema   |                         Description
---------+---------+------------+--------------------------------------------------------------
 dblink  | 1.2     | public     | connect to other PostgreSQL databases from within a database
 plpgsql | 1.0     | pg_catalog | PL/pgSQL procedural language
(2 rows)

pruebas=#
pruebas=# select version();
                                                 version
----------------------------------------------------------------------------------------------------------
 PostgreSQL 16.7 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 11.5.0 20240719 (Red Hat 11.5.0-2), 64-bit
(1 row)

pruebas=#



--- OS side -----------------------

$ cat /etc/os-release
NAME="AlmaLinux"
VERSION="9.4 (Seafoam Ocelot)"
ID="almalinux"
ID_LIKE="rhel centos fedora"
VERSION_ID="9.4"
PLATFORM_ID="platform:el9"
PRETTY_NAME="AlmaLinux 9.4 (Seafoam Ocelot)"
ANSI_COLOR="0;34"
LOGO="fedora-logo-icon"
CPE_NAME="cpe:/o:almalinux:almalinux:9::baseos"
HOME_URL="https://almalinux.org/"
DOCUMENTATION_URL="https://wiki.almalinux.org/"
BUG_REPORT_URL="https://bugs.almalinux.org/"

ALMALINUX_MANTISBT_PROJECT="AlmaLinux-9"
ALMALINUX_MANTISBT_PROJECT_VERSION="9.4"
REDHAT_SUPPORT_PRODUCT="AlmaLinux"
REDHAT_SUPPORT_PRODUCT_VERSION="9.4"
SUPPORT_END=2032-06-01




# pwd
/usr/pgsql-16/include/server/utils
# ls -F
acl.h               date.h            formatting.h      jsonpath.h              pg_lsn.h            relmapper.h         syscache.h
aclchk_internal.h   datetime.h        freepage.h        logtape.h               pg_rusage.h         relptr.h            timeout.h
array.h             datum.h           geo_decls.h       lsyscache.h             pgstat_internal.h   reltrigger.h        timestamp.h
arrayaccess.h       dsa.h             guc.h             memdebug.h              pidfile.h           resowner.h          tuplesort.h
ascii.h             dynahash.h        guc_hooks.h       memutils.h              plancache.h         resowner_private.h  tuplestore.h
attoptcache.h       elog.h            guc_tables.h      memutils_internal.h     portal.h            rls.h               typcache.h
backend_progress.h  errcodes.h        help_config.h     memutils_memorychunk.h  probes.h            ruleutils.h         tzparser.h
backend_status.h    evtcache.h        hsearch.h         multirangetypes.h       ps_status.h         sampling.h          usercontext.h
builtins.h          expandeddatum.h   index_selfuncs.h  numeric.h               queryenvironment.h  selfuncs.h          uuid.h
bytea.h             expandedrecord.h  inet.h            old_snapshot.h          rangetypes.h        sharedtuplestore.h  varbit.h
cash.h              float.h           inval.h           palloc.h                regproc.h           snapmgr.h           varlena.h
catcache.h          fmgroids.h        json.h            partcache.h             rel.h               snapshot.h          wait_event.h
combocid.h          fmgrprotos.h      jsonb.h           pg_crc.h                relcache.h          sortsupport.h       xid8.h
conffiles.h         fmgrtab.h         jsonfuncs.h       pg_locale.h             relfilenumbermap.h  spccache.h          xml.h
# ls -l ucol.h
ls: cannot access 'ucol.h': No such file or directory
#





