diff --git a/bash/history b/bash/history
index 8018fa8..3a1c90a 100644
--- a/bash/history
+++ b/bash/history
@@ -10,4 +10,7 @@ shopt -s histappend
 # ignore sequential duplicates
 export HISTCONTROL=ignoreboth
 
+# more!
+export HISTSIZE=10000
+
 # vim: ft=sh
diff --git a/osx b/osx
index 30813ee..e4b8517 100644
--- a/osx
+++ b/osx
@@ -1,22 +1,47 @@
-# see https://github.com/mathiasbynens/dotfiles/blob/master/.osx
+#!/bin/sh
+#
+# for more, see https://github.com/mathiasbynens/dotfiles/blob/master/.osx
+
 #sudo tmutil disablelocal
 
+# disable rubberbanding, but not vanishing scrollbars
+defaults write -g NSScrollViewRubberbanding -bool false
+
 # fix font with external monitor
 # http://apple.stackexchange.com/questions/19468/terminal-text-size-different-when-connected-to-external-monitor
 defaults -currentHost write -globalDomain AppleFontSmoothing -int 2
 
+# disable new windows zooming in
 defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false
+
 defaults write NSGlobalDomain NSWindowResizeTime 0.15
+
+#
 defaults write com.apple.dock expose-animation-duration -float 0.15
+
+# switch to repeat keys on long key presses
 defaults write -g ApplePressAndHoldEnabled -bool false
+
+# open disk images automatically
 defaults write com.apple.frameworks.diskimages auto-open-ro-root -bool true
 defaults write com.apple.frameworks.diskimages auto-open-rw-root -bool true
+
+# stop polluting network shares
 defaults write com.apple.desktopservices DSDontWriteNetworkStores -bool true
+
+# disable mail animations
 defaults write com.apple.Mail DisableReplyAnimations -bool true
 defaults write com.apple.Mail DisableSendAnimations -bool true
+
+# switch to not remembering windows
 defaults write NSGlobalDomain NSQuitAlwaysKeepsWindows -bool false
+
+# show user's Library
 chflags nohidden ~/Library
+
+# default to UTF-8 instead of MacRoman (http://superuser.com/a/82194)
 #echo "0x08000100:0" > ~/.CFUserTextEncoding
 
+# restart all possibly affected app
 for app in Safari Dock Mail Finder; do killall $app; done
 
diff --git a/zsh/history b/zsh/history
index 096b555..f136b8c 100644
--- a/zsh/history
+++ b/zsh/history
@@ -1,10 +1,12 @@
 # ignore sequential duplicates
 setopt hist_ignore_dups
 setopt hist_ignore_space
+setopt hist_reduce_blanks
+setopt append_history
+setopt hist_verify
 
-# keep 1000 lines of history within the shell and save it to ~/.zsh_history:
-HISTSIZE=1000
-SAVEHIST=1000
+HISTSIZE=10000
+SAVEHIST=10000
 HISTFILE=~/.zsh_history
 
 # vim: ft=zsh