Added utility script pg_dumpaccounts to contrib.

Derived from pg_dumpall it just dumps users and groups.

Jan

contrib/pg_dumpaccounts/Makefile

+#-------------------------------------------------------------------------
+#
+# Makefile for contrib/pg_dumpaccounts
+#
+# Copyright (c) 1994, Regents of the University of California
+#
+# $Header: /cvsroot/pgsql/contrib/pg_dumpaccounts/Attic/Makefile,v 1.2 2000/11/02 18:20:12 wieck Exp $
+#
+#-------------------------------------------------------------------------
+
+subdir = contrib/pg_dumpaccounts
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
+
+all: pg_dumpaccounts
+
+pg_dumpaccounts: pg_dumpaccounts.sh
+	sed -e 's,@VERSION@,$(VERSION),g' \
+	    -e 's,@MULTIBYTE@,$(MULTIBYTE),g' \
+	    -e 's,@bindir@,$(bindir),g' \
+	  $< >$@
+	chmod a+x $@
+
+install: all installdirs
+	$(INSTALL_SCRIPT) pg_dumpaccounts $(DESTDIR)$(bindir)/pg_dumpaccounts
+
+installdirs:
+	$(mkinstalldirs) $(DESTDIR)$(bindir)
+
+uninstall:
+	rm -f $(addprefix $(DESTDIR)$(bindir)/, pg_dumpaccounts)
+
+depend dep:
+
+clean distclean maintainer-clean:
+	rm -f pg_dumpaccounts
+

contrib/pg_dumpaccounts/README

+pg_dumpaccounts
+
+This is a little utility script derived from pg_dumpall. It just
+dumps the global pg_shadow and pg_group as pg_dumpall does without
+dumping any of the databases. This is useful for installations 
+that have many databases with different backup schedules, where
+pg_dumpall will never be run and thus, the users and groups will
+never be backed up.
+

contrib/pg_dumpaccounts/pg_dumpaccounts.sh

+#! /bin/sh
+
+# pg_dumpaccounts
+#
+# Dumps the "pg_shadow" and "pg_group" tables, which belong to the 
+# whole installation rather than any one individual database.
+#
+# $Header: /cvsroot/pgsql/contrib/pg_dumpaccounts/Attic/pg_dumpaccounts.sh,v 1.1 2000/11/02 18:20:12 wieck Exp $
+
+CMDNAME=`basename $0`
+
+# substituted at build
+VERSION='@VERSION@'
+MULTIBYTE='@MULTIBYTE@'
+bindir='@bindir@'
+
+#
+# Find out where we're located
+#
+PGPATH=
+if echo "$0" | grep '/' > /dev/null 2>&1 ; then
+    # explicit dir name given
+    PGPATH=`echo $0 | sed 's,/[^/]*$,,'`       # (dirname command is not portable)
+else
+    # look for it in PATH ('which' command is not portable)
+    for dir in `echo "$PATH" | sed 's/:/ /g'` ; do
+        # empty entry in path means current dir
+        [ x"$dir" = x ] && dir='.'
+        if [ -f "$dir/$CMDNAME" ] ; then
+            PGPATH="$dir"
+            break
+        fi
+    done
+fi
+
+# As last resort use the installation directory. We don't want to use
+# this as first resort because depending on how users do release upgrades
+# they might temporarily move the installation tree elsewhere, so we'd
+# accidentally invoke the newly installed versions of pg_dump and psql.
+if [ x"$PGPATH" = x"" ]; then
+    PGPATH=$bindir
+fi
+
+#
+# Look for needed programs
+#
+for prog in psql ; do
+    if [ ! -x "$PGPATH/$prog" ] ; then
+        echo "The program $prog needed by $CMDNAME could not be found. It was"
+        echo "expected at:"
+        echo "    $PGPATH/$prog"
+        echo "If this is not the correct directory, please start $CMDNAME"
+        echo "with a full search path. Otherwise make sure that the program"
+        echo "was installed successfully."
+        exit 1
+    fi
+done
+
+#
+# to adapt to System V vs. BSD 'echo'
+#
+if echo '\\' | grep '\\\\' >/dev/null 2>&1
+then	
+    BS='\' dummy='\'            # BSD
+else
+    BS='\\'                     # System V
+fi
+# The dummy assignment is necessary to prevent Emacs' font-lock
+# mode from going ballistic when editing this file.
+
+
+usage=
+
+#
+# Scan options. We're interested in the -h (host) and -p (port) options.
+#
+while [ $# -gt 0 ] ; do
+    case $1 in
+        --help)
+                usage=t
+                break
+                ;;
+        --version)
+                echo "pg_dumpaccounts (PostgreSQL) $VERSION"
+                exit 0
+                ;;
+		--host|-h)
+				connectopts="$connectopts -h $2"
+				shift
+				;;
+        -h*)
+                connectopts="$connectopts $1"
+                ;;
+        --host=*)
+                connectopts="$connectopts -h "`echo $1 | sed 's/^--host=//'`
+                ;;
+		--port|-p)
+				connectopts="$connectopts -p $2"
+				shift
+				;;
+        -p*)
+                connectopts="$connectopts $1"
+                ;;
+        --port=*)
+                connectopts="$connectopts -p "`echo $1 | sed 's/^--port=//'`
+                ;;
+        *)
+                echo "unknown option '$1'"
+				usage=t
+                ;;
+    esac
+    shift
+done
+
+
+if [ "$usage" ] ; then
+    echo "$CMDNAME dumps users and groups of a PostgreSQL database cluster."
+    echo
+    echo "Usage:"
+    echo "  $CMDNAME [ -c ] [ -h host ] [ -p port ]"
+    echo
+    echo "Options:"
+    echo "  -h, --host <hostname>    server host name"
+    echo "  -p, --port <port>        server port number"
+    echo
+    echo "Report bugs to <pgsql-bugs@postgresql.org>."
+    exit 0
+fi
+
+
+PSQL="${PGPATH}/psql $connectopts"
+
+
+echo "--"
+echo "-- pg_dumpaccounts ($VERSION) $connectopts"
+echo "--"
+echo "${BS}connect template1"
+
+#
+# Dump users (but not the user created by initdb)
+#
+echo "DELETE FROM pg_shadow WHERE usesysid NOT IN (SELECT datdba FROM pg_database WHERE datname = 'template1');"
+echo
+
+$PSQL -d template1 -At <<__END__
+SELECT
+  'CREATE USER "' || usename || '" WITH SYSID ' || usesysid
+  || CASE WHEN passwd IS NOT NULL THEN ' PASSWORD ''' || passwd || '''' else '' end
+  || CASE WHEN usecreatedb THEN ' CREATEDB'::text ELSE ' NOCREATEDB' END
+  || CASE WHEN usesuper THEN ' CREATEUSER'::text ELSE ' NOCREATEUSER' END
+  || CASE WHEN valuntil IS NOT NULL THEN ' VALID UNTIL '''::text
+    || CAST(valuntil AS TIMESTAMP) || '''' ELSE '' END || ';'
+FROM pg_shadow
+WHERE usesysid <> (SELECT datdba FROM pg_database WHERE datname = 'template1');
+__END__
+echo
+
+#
+# Dump groups
+#
+echo "DELETE FROM pg_group;"
+echo
+
+$PSQL -d template1 -At -F ' ' -c 'SELECT * FROM pg_group;' | \
+while read GRONAME GROSYSID GROLIST ; do
+    echo "CREATE GROUP \"$GRONAME\" WITH SYSID ${GROSYSID};"
+    raw_grolist=`echo "$GROLIST" | sed 's/^{\(.*\)}$/\1/' | tr ',' ' '`
+    for userid in $raw_grolist ; do
+        username=`$PSQL -d template1 -At -c "SELECT usename FROM pg_shadow WHERE usesysid = ${userid};"`
+        echo "  ALTER GROUP \"$GRONAME\" ADD USER \"$username\";"
+    done
+done
+
+exit 0