From 8694f97099567c29dad8664d5bea61388ef32fba Mon Sep 17 00:00:00 2001
From: Zeh Rizzatti <zehrizzatti@gmail.com>
Date: Wed, 12 Dec 2012 14:43:37 -0300
Subject: [PATCH 1/4] add zstyle for allowing alias definitions on modules

---
 runcoms/zpreztorc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/runcoms/zpreztorc b/runcoms/zpreztorc
index 27aad49b49..d9bc049822 100644
--- a/runcoms/zpreztorc
+++ b/runcoms/zpreztorc
@@ -34,6 +34,16 @@ zstyle ':prezto:load' pmodule \
   'completion' \
   'prompt'
 
+#
+# Alias
+#
+
+# Allow aliases defined in all loaded modules with 'all'
+# Commenting out will disable aliases
+# Specific modules can be loaded with:
+# zstyle ':prezto:alias' pmodule 'git' 'ruby' 'osx'
+zstyle ':prezto:alias' pmodule 'all'
+
 #
 # Editor
 #

From d2c14fecb9e6d2351e8fa380974e6f9c91fc1d14 Mon Sep 17 00:00:00 2001
From: Zeh Rizzatti <zehrizzatti@gmail.com>
Date: Wed, 12 Dec 2012 14:44:08 -0300
Subject: [PATCH 2/4] define aliases for git if :prezto:alias is set

---
 modules/git/alias.zsh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index 8d84d92387..bf922324f3 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -22,6 +22,11 @@ zstyle -s ':prezto:module:git:log:brief' format '_git_log_brief_format' \
 zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_submodules' \
   || _git_status_ignore_submodules='none'
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all git; then
+  return 1
+fi
+
 #
 # Aliases
 #

From b3f1d9ff2cba5fe953c8dcc310cdf3edaf9a3e47 Mon Sep 17 00:00:00 2001
From: Zeh Rizzatti <zehrizzatti@gmail.com>
Date: Wed, 12 Dec 2012 18:54:48 -0300
Subject: [PATCH 3/4] extend the conditionals for all modules except utility

---
 modules/directory/init.zsh |  5 +++
 modules/dpkg/init.zsh      |  5 +++
 modules/fasd/init.zsh      |  5 +++
 modules/git/alias.zsh      |  8 ++--
 modules/history/init.zsh   |  5 +++
 modules/macports/init.zsh  |  5 +++
 modules/osx/init.zsh       | 25 +++++++-----
 modules/pacman/init.zsh    |  5 +++
 modules/perl/init.zsh      |  5 +++
 modules/python/init.zsh    |  5 +++
 modules/rails/init.zsh     |  5 +++
 modules/rsync/init.zsh     |  5 +++
 modules/ruby/init.zsh      |  5 +++
 modules/screen/init.zsh    |  5 +++
 modules/tmux/init.zsh      |  5 +++
 modules/utility/init.zsh   | 83 ++++++++++++++++++++------------------
 modules/yum/init.zsh       |  5 +++
 17 files changed, 133 insertions(+), 53 deletions(-)

diff --git a/modules/directory/init.zsh b/modules/directory/init.zsh
index 3be411b5a5..e63f885831 100644
--- a/modules/directory/init.zsh
+++ b/modules/directory/init.zsh
@@ -26,6 +26,11 @@ unsetopt CLOBBER            # Do not overwrite existing files with > and >>.
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all directory; then
+  return 1
+fi
+
 alias d='dirs -v'
 for index ({1..9}) alias "$index"="cd +${index}"; unset index
 
diff --git a/modules/dpkg/init.zsh b/modules/dpkg/init.zsh
index 939e9100b4..fa8de27f0d 100644
--- a/modules/dpkg/init.zsh
+++ b/modules/dpkg/init.zsh
@@ -16,6 +16,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all dpkg; then
+  return 1
+fi
+
 # Cleans the cache.
 alias debc='sudo apt-get clean && sudo apt-get autoclean'
 
diff --git a/modules/fasd/init.zsh b/modules/fasd/init.zsh
index 7088e9c681..58beaf44d5 100644
--- a/modules/fasd/init.zsh
+++ b/modules/fasd/init.zsh
@@ -49,6 +49,11 @@ function fasd_cd {
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all fasd; then
+  return 1
+fi
+
 # Changes the current working directory interactively.
 alias j='fasd_cd -i'
 
diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index bf922324f3..6bd6de5fbc 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -22,15 +22,15 @@ zstyle -s ':prezto:module:git:log:brief' format '_git_log_brief_format' \
 zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_submodules' \
   || _git_status_ignore_submodules='none'
 
+#
+# Aliases
+#
+
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all git; then
   return 1
 fi
 
-#
-# Aliases
-#
-
 # Git
 alias g='git'
 
diff --git a/modules/history/init.zsh b/modules/history/init.zsh
index 31db4c5b3a..012c7408f8 100644
--- a/modules/history/init.zsh
+++ b/modules/history/init.zsh
@@ -35,5 +35,10 @@ setopt HIST_BEEP                 # Beep when accessing non-existent history.
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all history; then
+  return 1
+fi
+
 # Lists the ten most used commands.
 alias history-stat="history 0 | awk '{print \$2}' | sort | uniq -c | sort -n -r | head"
diff --git a/modules/macports/init.zsh b/modules/macports/init.zsh
index 4554ca1fb5..58e01b5b71 100644
--- a/modules/macports/init.zsh
+++ b/modules/macports/init.zsh
@@ -37,6 +37,11 @@ path=(
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all macports; then
+  return 1
+fi
+
 alias portc='sudo port clean --all installed'
 alias porti='sudo port install'
 alias ports='port search'
diff --git a/modules/osx/init.zsh b/modules/osx/init.zsh
index 6acbfbc762..69b002e9a1 100644
--- a/modules/osx/init.zsh
+++ b/modules/osx/init.zsh
@@ -10,16 +10,6 @@ if [[ "$OSTYPE" != darwin* ]]; then
   return 1
 fi
 
-#
-# Aliases
-#
-
-# Change directory to the current Finder directory.
-alias cdf='cd "$(pfd)"'
-
-# Push directory to the current Finder directory.
-alias pushdf='pushd "$(pfd)"'
-
 #
 # Functions
 #
@@ -37,3 +27,18 @@ function rm-osx-cruft {
   \) -print0 | xargs -0 rm -rf
 }
 
+#
+# Aliases
+#
+
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all osx; then
+  return 1
+fi
+
+# Change directory to the current Finder directory.
+alias cdf='cd "$(pfd)"'
+
+# Push directory to the current Finder directory.
+alias pushdf='pushd "$(pfd)"'
+
diff --git a/modules/pacman/init.zsh b/modules/pacman/init.zsh
index c6fdc451e3..5a720ee8dc 100644
--- a/modules/pacman/init.zsh
+++ b/modules/pacman/init.zsh
@@ -18,6 +18,11 @@ fi
 # Frontend
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all pacman; then
+  return 1
+fi
+
 # Get the Pacman frontend.
 zstyle -s ':prezto:module:pacman' frontend '_pacman_frontend'
 
diff --git a/modules/perl/init.zsh b/modules/perl/init.zsh
index 62701283ac..5c7a0df833 100644
--- a/modules/perl/init.zsh
+++ b/modules/perl/init.zsh
@@ -43,6 +43,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all perl; then
+  return 1
+fi
+
 # General
 alias pl='perl'
 alias pld='perldoc'
diff --git a/modules/python/init.zsh b/modules/python/init.zsh
index 11875612b7..b3d63b800b 100644
--- a/modules/python/init.zsh
+++ b/modules/python/init.zsh
@@ -42,6 +42,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all python; then
+  return 1
+fi
+
 alias py='python'
 
 # pythonz
diff --git a/modules/rails/init.zsh b/modules/rails/init.zsh
index e51185bb8c..71e7fb4a5d 100644
--- a/modules/rails/init.zsh
+++ b/modules/rails/init.zsh
@@ -16,6 +16,11 @@ fi
 # Aliases (Compatible with Rails 2)
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all rails; then
+  return 1
+fi
+
 alias ror='rails'
 alias rorc='_rails-command console'
 alias rordc='_rails-command dbconsole'
diff --git a/modules/rsync/init.zsh b/modules/rsync/init.zsh
index c3b3b577b3..4e07e9e723 100644
--- a/modules/rsync/init.zsh
+++ b/modules/rsync/init.zsh
@@ -14,6 +14,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all rsync; then
+  return 1
+fi
+
 _rsync_cmd='rsync --verbose --progress --human-readable --compress --archive --hard-links --one-file-system'
 
 # Mac OS X and HFS+ Enhancements
diff --git a/modules/ruby/init.zsh b/modules/ruby/init.zsh
index b5ab77d0dd..566f179d75 100644
--- a/modules/ruby/init.zsh
+++ b/modules/ruby/init.zsh
@@ -40,6 +40,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all ruby; then
+  return 1
+fi
+
 # General
 alias rb='ruby'
 
diff --git a/modules/screen/init.zsh b/modules/screen/init.zsh
index 424f6584f6..00588ff9cb 100644
--- a/modules/screen/init.zsh
+++ b/modules/screen/init.zsh
@@ -32,6 +32,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all screen; then
+  return 1
+fi
+
 alias scr='screen'
 alias scrl='screen -list'
 alias scrn='screen -U -S'
diff --git a/modules/tmux/init.zsh b/modules/tmux/init.zsh
index a464827640..14d48b1938 100644
--- a/modules/tmux/init.zsh
+++ b/modules/tmux/init.zsh
@@ -40,5 +40,10 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all tmux; then
+  return 1
+fi
+
 alias tmuxa='tmux attach-session'
 alias tmuxl='tmux list-sessions'
diff --git a/modules/utility/init.zsh b/modules/utility/init.zsh
index ea31138c33..2d043e1a8e 100644
--- a/modules/utility/init.zsh
+++ b/modules/utility/init.zsh
@@ -13,10 +13,54 @@ pmodload 'helper' 'spectrum'
 # Correct commands.
 setopt CORRECT
 
+#
+# Functions
+#
+
+# Makes a directory and changes to it.
+function mkdcd {
+  [[ -n "$1" ]] && mkdir -p "$1" && builtin cd "$1"
+}
+
+# Changes to a directory and lists its contents.
+function cdls {
+  builtin cd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Pushes an entry onto the directory stack and lists its contents.
+function pushdls {
+  builtin pushd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Pops an entry off the directory stack and lists its contents.
+function popdls {
+  builtin popd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Prints columns 1 2 3 ... n.
+function slit {
+  awk "{ print ${(j:,:):-\$${^@}} }"
+}
+
+# Finds files and executes a command on them.
+function find-exec {
+  find . -type f -iname "*${1:-}*" -exec "${2:-file}" '{}' \;
+}
+
+# Displays user owned processes status.
+function psu {
+  ps -U "${1:-$USER}" -o 'pid,%cpu,%mem,command' "${(@)argv[2,-1]}"
+}
+
 #
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all utility; then
+  return 1
+fi
+
 # Disable correction.
 alias ack='nocorrect ack'
 alias cd='nocorrect cd'
@@ -139,42 +183,3 @@ fi
 # Serves a directory via HTTP.
 alias http-serve='python -m SimpleHTTPServer'
 
-#
-# Functions
-#
-
-# Makes a directory and changes to it.
-function mkdcd {
-  [[ -n "$1" ]] && mkdir -p "$1" && builtin cd "$1"
-}
-
-# Changes to a directory and lists its contents.
-function cdls {
-  builtin cd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Pushes an entry onto the directory stack and lists its contents.
-function pushdls {
-  builtin pushd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Pops an entry off the directory stack and lists its contents.
-function popdls {
-  builtin popd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Prints columns 1 2 3 ... n.
-function slit {
-  awk "{ print ${(j:,:):-\$${^@}} }"
-}
-
-# Finds files and executes a command on them.
-function find-exec {
-  find . -type f -iname "*${1:-}*" -exec "${2:-file}" '{}' \;
-}
-
-# Displays user owned processes status.
-function psu {
-  ps -U "${1:-$USER}" -o 'pid,%cpu,%mem,command' "${(@)argv[2,-1]}"
-}
-
diff --git a/modules/yum/init.zsh b/modules/yum/init.zsh
index d7019cd060..80e40dc4fd 100644
--- a/modules/yum/init.zsh
+++ b/modules/yum/init.zsh
@@ -15,6 +15,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all yum; then
+  return 1
+fi
+
 alias yumc='sudo yum clean all'    # Cleans the cache.
 alias yumh='yum history'           # Displays history.
 alias yumi='sudo yum install'      # Installs package(s).

From 8d7383e5dd6e68394f59d3b6ceef5be77bdba9f2 Mon Sep 17 00:00:00 2001
From: Zeh Rizzatti <zehrizzatti@gmail.com>
Date: Wed, 12 Dec 2012 19:15:09 -0300
Subject: [PATCH 4/4] return 0 instead of 1

returning 1 would make :module:loaded set to no, undefining functions, which was
not intended.
not using the aliases is not an error, just an option, while other features of
the module were loaded normally
---
 modules/directory/init.zsh | 2 +-
 modules/dpkg/init.zsh      | 2 +-
 modules/fasd/init.zsh      | 2 +-
 modules/git/alias.zsh      | 2 +-
 modules/history/init.zsh   | 2 +-
 modules/macports/init.zsh  | 2 +-
 modules/osx/init.zsh       | 2 +-
 modules/pacman/init.zsh    | 2 +-
 modules/perl/init.zsh      | 2 +-
 modules/python/init.zsh    | 2 +-
 modules/rails/init.zsh     | 2 +-
 modules/rsync/init.zsh     | 2 +-
 modules/ruby/init.zsh      | 2 +-
 modules/screen/init.zsh    | 2 +-
 modules/tmux/init.zsh      | 2 +-
 modules/utility/init.zsh   | 2 +-
 modules/yum/init.zsh       | 2 +-
 17 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/modules/directory/init.zsh b/modules/directory/init.zsh
index e63f885831..cc9a523140 100644
--- a/modules/directory/init.zsh
+++ b/modules/directory/init.zsh
@@ -28,7 +28,7 @@ unsetopt CLOBBER            # Do not overwrite existing files with > and >>.
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all directory; then
-  return 1
+  return 0
 fi
 
 alias d='dirs -v'
diff --git a/modules/dpkg/init.zsh b/modules/dpkg/init.zsh
index fa8de27f0d..83a61aa1c3 100644
--- a/modules/dpkg/init.zsh
+++ b/modules/dpkg/init.zsh
@@ -18,7 +18,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all dpkg; then
-  return 1
+  return 0
 fi
 
 # Cleans the cache.
diff --git a/modules/fasd/init.zsh b/modules/fasd/init.zsh
index 58beaf44d5..ce188db60c 100644
--- a/modules/fasd/init.zsh
+++ b/modules/fasd/init.zsh
@@ -51,7 +51,7 @@ function fasd_cd {
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all fasd; then
-  return 1
+  return 0
 fi
 
 # Changes the current working directory interactively.
diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index 6bd6de5fbc..d08d9d9ec7 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -28,7 +28,7 @@ zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_subm
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all git; then
-  return 1
+  return 0
 fi
 
 # Git
diff --git a/modules/history/init.zsh b/modules/history/init.zsh
index 012c7408f8..1e3fb464ca 100644
--- a/modules/history/init.zsh
+++ b/modules/history/init.zsh
@@ -37,7 +37,7 @@ setopt HIST_BEEP                 # Beep when accessing non-existent history.
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all history; then
-  return 1
+  return 0
 fi
 
 # Lists the ten most used commands.
diff --git a/modules/macports/init.zsh b/modules/macports/init.zsh
index 58e01b5b71..f3f587903c 100644
--- a/modules/macports/init.zsh
+++ b/modules/macports/init.zsh
@@ -39,7 +39,7 @@ path=(
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all macports; then
-  return 1
+  return 0
 fi
 
 alias portc='sudo port clean --all installed'
diff --git a/modules/osx/init.zsh b/modules/osx/init.zsh
index 69b002e9a1..9415bf84dc 100644
--- a/modules/osx/init.zsh
+++ b/modules/osx/init.zsh
@@ -33,7 +33,7 @@ function rm-osx-cruft {
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all osx; then
-  return 1
+  return 0
 fi
 
 # Change directory to the current Finder directory.
diff --git a/modules/pacman/init.zsh b/modules/pacman/init.zsh
index 5a720ee8dc..c3881705b3 100644
--- a/modules/pacman/init.zsh
+++ b/modules/pacman/init.zsh
@@ -20,7 +20,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all pacman; then
-  return 1
+  return 0
 fi
 
 # Get the Pacman frontend.
diff --git a/modules/perl/init.zsh b/modules/perl/init.zsh
index 5c7a0df833..294394f81a 100644
--- a/modules/perl/init.zsh
+++ b/modules/perl/init.zsh
@@ -45,7 +45,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all perl; then
-  return 1
+  return 0
 fi
 
 # General
diff --git a/modules/python/init.zsh b/modules/python/init.zsh
index b3d63b800b..0c6c2191c4 100644
--- a/modules/python/init.zsh
+++ b/modules/python/init.zsh
@@ -44,7 +44,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all python; then
-  return 1
+  return 0
 fi
 
 alias py='python'
diff --git a/modules/rails/init.zsh b/modules/rails/init.zsh
index 71e7fb4a5d..4fa07baac0 100644
--- a/modules/rails/init.zsh
+++ b/modules/rails/init.zsh
@@ -18,7 +18,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all rails; then
-  return 1
+  return 0
 fi
 
 alias ror='rails'
diff --git a/modules/rsync/init.zsh b/modules/rsync/init.zsh
index 4e07e9e723..1985f895a6 100644
--- a/modules/rsync/init.zsh
+++ b/modules/rsync/init.zsh
@@ -16,7 +16,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all rsync; then
-  return 1
+  return 0
 fi
 
 _rsync_cmd='rsync --verbose --progress --human-readable --compress --archive --hard-links --one-file-system'
diff --git a/modules/ruby/init.zsh b/modules/ruby/init.zsh
index 566f179d75..b4e696b97d 100644
--- a/modules/ruby/init.zsh
+++ b/modules/ruby/init.zsh
@@ -42,7 +42,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all ruby; then
-  return 1
+  return 0
 fi
 
 # General
diff --git a/modules/screen/init.zsh b/modules/screen/init.zsh
index 00588ff9cb..aa1c6fc933 100644
--- a/modules/screen/init.zsh
+++ b/modules/screen/init.zsh
@@ -34,7 +34,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all screen; then
-  return 1
+  return 0
 fi
 
 alias scr='screen'
diff --git a/modules/tmux/init.zsh b/modules/tmux/init.zsh
index 14d48b1938..5319d995d5 100644
--- a/modules/tmux/init.zsh
+++ b/modules/tmux/init.zsh
@@ -42,7 +42,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all tmux; then
-  return 1
+  return 0
 fi
 
 alias tmuxa='tmux attach-session'
diff --git a/modules/utility/init.zsh b/modules/utility/init.zsh
index 2d043e1a8e..6ffd05f1a1 100644
--- a/modules/utility/init.zsh
+++ b/modules/utility/init.zsh
@@ -58,7 +58,7 @@ function psu {
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all utility; then
-  return 1
+  return 0
 fi
 
 # Disable correction.
diff --git a/modules/yum/init.zsh b/modules/yum/init.zsh
index 80e40dc4fd..efa053ce6e 100644
--- a/modules/yum/init.zsh
+++ b/modules/yum/init.zsh
@@ -17,7 +17,7 @@ fi
 
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all yum; then
-  return 1
+  return 0
 fi
 
 alias yumc='sudo yum clean all'    # Cleans the cache.