Added UTOSC 2012 zsh presentation

utosc_2012-05-05_zsh/presentation.rst

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+=====================================================
+Zsh: A high-level overview of shell-use and scripting
+=====================================================
+
+:Organization: Utah Open Source Conference 2012
+:Author: Seth House <seth@eseth.com>
+:Date: 2012-05-05
+
+Why Zsh
+=======
+
+**Why Zsh**
+
+A short history
+---------------
+
+* Written in 1990 by Paul Falstad at Princeton University
+* Named for the login of a teaching assistant, Zhong Shao
+* Implements many of the features of bash, ksh, and csh
+
+Basics
+------
+
+* ``~/.zprofile``
+* ``~/.zshrc``
+* ``~/.zlogin``
+* ``~/.zlogout``
+
+Interactive setup
+-----------------
+
+::
+
+    autoload -Uz zsh-newuser-install
+    zsh-newuser-install -f
+
+Compatibility Modes
+-------------------
+
+Tries to emulate *sh* or *ksh* when invoked as ``sh`` or ``ksh``,
+respectively.
+
+Themeable Prompts
+-----------------
+
+Preview all built-in themes::
+
+    prompt -p
+
+Shell Options
+-------------
+
+* ``auto_cd``
+* ``extendedglob``
+* ``no_clobber``
+* ``rm_star_wait``
+* ``share_history``
+
+Spelling correction
+-------------------
+
+::
+
+    % setopt correct
+    % sl
+
+Zsh Line Editor (``zle``)
+-------------------------
+
+* **Zsh does not use readline!**
+* Excellent Multiline Editing
+
+zmv
+---
+
+::
+
+    zmv '(*)-(*).mpeg3' '$2_$1.mp3'
+    alias mmv='noglob zmv -W'
+    mmv *pl.bak backups/*.pl
+
+Alias Suffixes
+--------------
+
+Allow for default handlers based on file extensions::
+
+    alias -s \
+        php="/usr/share/vim/vim73/macros/less.sh"
+
+Global aliases
+--------------
+
+::
+
+    alias -g IN='..@{u}'
+    alias -g OUT='@{u}..'
+    alias -g UP='@{u}'
+
+Glob Qualifiers
+===============
+
+**Glob Qualifiers**
+
+``zshexpn(1)`` manpage under "Glob Qualifiers"
+
+Globbing
+--------
+
+Recursive Search
+    ``**/``
+Numeric Ranges
+    ``ls file<1-5>``, ``ls file<50->``
+Negate Matches
+    ``ls ^*.o``
+Grouping
+    ``ls (foo|bar)``
+
+Globbing Basics
+---------------
+
+Regular Files
+    ``ls *(.)``
+Irregular Files
+    ``ls *(^.)``
+Directories
+    ``ls *(/)``
+Executable Files (non-directories)
+    ``ls *(*)``
+Symbolic Links
+    ``ls *(@)``
+Follows Symbolic Links
+    ``ls *(-)``
+
+File access time
+----------------
+
+For files accessed less than 5 hours ago::
+
+    ls *(ah-5)
+
+* `a` file access time (atime)
+* `m` file modification time
+* `c` inode change time
+
+Time can be either `+` or `-` the current time.
+
+Units:
+
+* `M` months
+* `w` weeks
+* `h` hours
+* `m` minutes
+* `s` seconds
+
+File size
+---------
+
+For files of size ((L)ength) greater than 100 KB::
+
+    ls (Lk+100)
+
+Size can be specified with `-` or `+` and units can be specified with
+kilobytes `k`, megabytes `m`, gigabytes `g`, or blocks `P`.
+
+File types
+----------
+
+For all directories::
+
+    ls *(/)
+
+Type units can be directories `/`, non-empty directories `F`, regular files
+`.`, symbolic links `@`, sockets `=`, fifos `p`, executable files `*`,
+device files `%`, block special `%b`, character special `%c`.
+
+Files on device
+---------------
+
+Only list files on the specified device::
+
+    ls *(d65030)
+
+File permissions
+----------------
+
+owner, group, world-readable, writable, executable, setuid, setgid, sticky::
+
+    ls *(r)     # readable by the current user
+    ls *(U)     # owned by the current user
+    ls *(u1000) # owned by uid 1000
+
+Long-form (`-`, `+`, `=` and octal)::
+
+    ls *(f:gu+w,o-rx:)
+
+Current user: ``(r)``, ``(w)``, ``(x)``
+All users: ``(R)``, ``(W)``, ``(X)``
+Owned by you: ``(U)``
+Setuid: ``(s)``, ``ls /**/*(s)``
+
+Globbing Combinations
+---------------------
+
+Readable, not writable for you::
+
+    ls *(r^w)
+
+Executable files (after following symbolic links)::
+
+    ls *(-*)
+
+Broken Symbolic Links::
+
+    rm *(-@)
+
+
+Completion
+==========
+
+**Completion**
+
+Completion
+----------
+
+* compinit
+* compinstall
+* bashcompinit
+
+Completion style syntax::
+
+    :completion:function:\
+        completer:command:argument:tag
+
+Completion Caching
+------------------
+
+Cache expensive completions::
+
+    zstyle ':completion:*' use-cache on
+    zstyle ':completion:*' cache-path ~/.zsh/cache
+
+    % rm ~/.zcompdump && exec zsh
+
+Completion Sorting
+------------------
+
+Sort specific completions::
+
+    zstyle ':completion:*:*:xdvi:*' menu yes select
+    zstyle ':completion:*:*:xdvi:*' file-sort time
+
+Arrays
+======
+
+**Arrays**
+
+``zshexpn(1)`` manpage under "PARAMETER EXPANSION"
+
+``zshparam(1)`` manpage under "ARRAY PARAMETERS"
+
+Arrays
+------
+
+Joins, splits, set operations(!)
+
+Argument handling
+=================
+
+``zshmodules(1)`` manpage under "zparseopts"
+
+zparseopts
+----------
+
+::
+
+    function mplayerx2() {
+        local -a args
+        zparseopts -D -E -a args -- s: -speed:
+        mplayer -af scaletempo -speed ${args[2]:=1.5} $1
+    }