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Doc: improve documentation about where the psqlrc files are.

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Remove no-longer-accurate claim that Windows lacks home directories.
Clarify the text by more clearly distinguishing which statements
reflect hard-wired choices versus which ones reflect overridable
defaults.  Update the examples of version-specific file names,
and make them track future version changes by using "&majorversion;"
and "&version;".  (BTW, in devel and beta releases this method
correctly says that you can use strings like "16devel" and "15beta4"
as minor version identifiers.)

Back-patch to v15, but not further, with the thought that in older
releases the examples with three-part version numbers still had
some historical relevance.  v15 will be the first major release after
the last 9.x branch went out of support.

Robert Treat and Tom Lane, reviewed by Julien Rouhaud

Discussion: https://postgr.es/m/CAJSLCQ07F-WCYYYOY8+dWhHcVeJ1Pb01cWc-c0Hu=M3EjKT2Eg@mail.gmail.com
This commit is contained in:
Tom Lane 2022-09-09 13:50:42 -04:00
parent c4b6d218e3
commit f734857a92
1 changed files with 17 additions and 13 deletions
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30
doc/src/sgml/ref/psql-ref.sgml
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@ -4892,32 +4892,36 @@ PSQL_EDITOR_LINENUMBER_ARG='--line '
commands.
</para>
<para>
The system-wide startup file is named <filename>psqlrc</filename> and is
The system-wide startup file is named <filename>psqlrc</filename>.
By default it is
sought in the installation's <quote>system configuration</quote> directory,
which is most reliably identified by running <literal>pg_config
--sysconfdir</literal>. By default this directory will be <filename>../etc/</filename>
--sysconfdir</literal>.
Typically this directory will be <filename>../etc/</filename>
relative to the directory containing
the <productname>PostgreSQL</productname> executables. The name of this
directory can be set explicitly via the <envar>PGSYSCONFDIR</envar>
environment variable.
the <productname>PostgreSQL</productname> executables.
The directory to look in can be set explicitly via
the <envar>PGSYSCONFDIR</envar> environment variable.
</para>
<para>
The user's personal startup file is named <filename>.psqlrc</filename>
and is sought in the invoking user's home directory. On Windows, which
lacks such a concept, the personal startup file is named
and is sought in the invoking user's home directory.
On Windows the personal startup file is instead named
<filename>%APPDATA%\postgresql\psqlrc.conf</filename>.
The location of the user's startup file can be set explicitly via
In either case, this default file path can be overridden by setting
the <envar>PSQLRC</envar> environment variable.
</para>
<para>
Both the system-wide startup file and the user's personal startup file
can be made <application>psql</application>-version-specific
by appending a dash and the <productname>PostgreSQL</productname>
major or minor release number to the file name,
for example <filename>~/.psqlrc-9.2</filename> or
<filename>~/.psqlrc-9.2.5</filename>. The most specific
version-matching file will be read in preference to a
non-version-specific file.
major or minor release identifier to the file name,
for example <filename>~/.psqlrc-&majorversion;</filename> or
<filename>~/.psqlrc-&version;</filename>.
The most specific version-matching file will be read in preference
to a non-version-specific file.
These version suffixes are added after determining the file path
as explained above.
</para>
</listitem>
</varlistentry>