init

.zprezto/modules/history/README.md

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+History
+=======
+
+Sets [history][1] options and defines history aliases.
+
+Variables
+---------
+
+  - `HISTFILE` stores the path to the history file.
+  - `HISTSIZE` stores the maximum number of events to save in the internal history.
+  - `SAVEHIST` stores the maximum number of events to save in the history file.
+
+Options
+-------
+
+  - `BANG_HIST` treats the **!** character specially during expansion.
+  - `EXTENDED_HISTORY` writes the history file in the *:start:elapsed;command* format.
+  - `INC_APPEND_HISTORY` writes to the history file immediately, not when the shell exits.
+  - `SHARE_HISTORY` shares history between all sessions.
+  - `HIST_EXPIRE_DUPS_FIRST` expires a duplicate event first when trimming history.
+  - `HIST_IGNORE_DUPS` does not record an event that was just recorded again.
+  - `HIST_IGNORE_ALL_DUPS` deletes an old recorded event if a new event is a duplicate.
+  - `HIST_FIND_NO_DUPS` does not display a previously found event.
+  - `HIST_IGNORE_SPACE` does not record an event starting with a space.
+  - `HIST_SAVE_NO_DUPS` does not write a duplicate event to the history file.
+  - `HIST_VERIFY` does not execute immediately upon history expansion.
+  - `HIST_BEEP` beeps when accessing non-existent history.
+
+Aliases
+-------
+
+  - `history-stat` lists the ten most used commands
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][2].*
+
+  - [Robby Russell](https://github.com/robbyrussell)
+  - [Sorin Ionescu](https://github.com/sorin-ionescu)
+
+[1]: http://zsh.sourceforge.net/Guide/zshguide02.html#l16
+[2]: https://github.com/sorin-ionescu/prezto/issues

.zprezto/modules/history/init.zsh

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+#
+# Sets history options and defines history aliases.
+#
+# Authors:
+#   Robby Russell <robby@planetargon.com>
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+
+#
+# Variables
+#
+
+HISTFILE="${ZDOTDIR:-$HOME}/.zhistory"       # The path to the history file.
+HISTSIZE=10000                   # The maximum number of events to save in the internal history.
+SAVEHIST=10000                   # The maximum number of events to save in the history file.
+
+#
+# Options
+#
+
+setopt BANG_HIST                 # Treat the '!' character specially during expansion.
+setopt EXTENDED_HISTORY          # Write the history file in the ':start:elapsed;command' format.
+setopt INC_APPEND_HISTORY        # Write to the history file immediately, not when the shell exits.
+setopt SHARE_HISTORY             # Share history between all sessions.
+setopt HIST_EXPIRE_DUPS_FIRST    # Expire a duplicate event first when trimming history.
+setopt HIST_IGNORE_DUPS          # Do not record an event that was just recorded again.
+setopt HIST_IGNORE_ALL_DUPS      # Delete an old recorded event if a new event is a duplicate.
+setopt HIST_FIND_NO_DUPS         # Do not display a previously found event.
+setopt HIST_IGNORE_SPACE         # Do not record an event starting with a space.
+setopt HIST_SAVE_NO_DUPS         # Do not write a duplicate event to the history file.
+setopt HIST_VERIFY               # Do not execute immediately upon history expansion.
+setopt HIST_BEEP                 # Beep when accessing non-existent history.
+
+#
+# Aliases
+#
+
+# Lists the ten most used commands.
+alias history-stat="history 0 | awk '{print \$2}' | sort | uniq -c | sort -n -r | head"