Update install_tool script.

dotfiles/zsh_custom/analyze_new_cluster.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+echo 'This script will generate minimal optimizer statistics rapidly'
+echo 'so your system is usable, and then gather statistics twice more'
+echo 'with increasing accuracy.  When it is done, your system will'
+echo 'have the default level of optimizer statistics.'
+echo
+
+echo 'If you have used ALTER TABLE to modify the statistics target for'
+echo 'any tables, you might want to remove them and restore them after'
+echo 'running this script because they will delay fast statistics generation.'
+echo
+
+echo 'If you would like default statistics as quickly as possible, cancel'
+echo 'this script and run:'
+echo '    "/opt/metasploit-framework/embedded/bin/vacuumdb" --all --analyze-only'
+echo
+
+"/opt/metasploit-framework/embedded/bin/vacuumdb" --all --analyze-in-stages
+echo
+
+echo 'Done'

dotfiles/zsh_custom/delete_old_cluster.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+rm -rf '/home/david/.msf4/db.prev'