Added gnu-utils plugin.

plugins/gnu-utils/gnu-utils.plugin.zsh

+# ------------------------------------------------------------------------------
+#          FILE:  gnu-utils.plugin.zsh
+#   DESCRIPTION:  oh-my-zsh plugin file.
+#        AUTHOR:  Sorin Ionescu (sorin.ionescu@gmail.com)
+#       VERSION:  1.0.0
+# ------------------------------------------------------------------------------
+
+
+if [[ -x "${commands[gwhoami]}" ]]; then 
+  __gnu_utils() {
+    emulate -L zsh
+    local gcmds
+    local gcmd
+    local cmd
+    local prefix
+
+    # coreutils 
+    gcmds=('g[' 'gbase64' 'gbasename' 'gcat' 'gchcon' 'gchgrp' 'gchmod'
+    'gchown' 'gchroot' 'gcksum' 'gcomm' 'gcp' 'gcsplit' 'gcut' 'gdate'
+    'gdd' 'gdf' 'gdir' 'gdircolors' 'gdirname' 'gdu' 'gecho' 'genv' 'gexpand'
+    'gexpr' 'gfactor' 'gfalse' 'gfmt' 'gfold' 'ggroups' 'ghead' 'ghostid'
+    'gid' 'ginstall' 'gjoin' 'gkill' 'glink' 'gln' 'glogname' 'gls' 'gmd5sum'
+    'gmkdir' 'gmkfifo' 'gmknod' 'gmktemp' 'gmv' 'gnice' 'gnl' 'gnohup' 'gnproc'
+    'god' 'gpaste' 'gpathchk' 'gpinky' 'gpr' 'gprintenv' 'gprintf' 'gptx' 'gpwd'
+    'greadlink' 'grm' 'grmdir' 'gruncon' 'gseq' 'gsha1sum' 'gsha224sum'
+    'gsha256sum' 'gsha384sum' 'gsha512sum' 'gshred' 'gshuf' 'gsleep' 'gsort'
+    'gsplit' 'gstat' 'gstty' 'gsum' 'gsync' 'gtac' 'gtail' 'gtee' 'gtest'
+    'gtimeout' 'gtouch' 'gtr' 'gtrue' 'gtruncate' 'gtsort' 'gtty' 'guname'
+    'gunexpand' 'guniq' 'gunlink' 'guptime' 'gusers' 'gvdir' 'gwc' 'gwho'
+    'gwhoami' 'gyes')
+
+    # Not part of coreutils, installed separately.
+    gcmds+=('gsed' 'gtar' 'gtime')
+
+    for gcmd in "${gcmds[@]}"; do
+      #
+      # This method allows for builtin commands to be primary but it's
+      # lost if hash -r or rehash -f is executed. Thus, those two 
+      # functions have to be wrapped.
+      #
+      (( ${+commands[$gcmd]} )) && hash ${gcmd[2,-1]}=${commands[$gcmd]}
+
+      #
+      # This method generates wrapper functions.
+      # It will override shell builtins.
+      #
+      # (( ${+commands[$gcmd]} )) && \
+      # eval "function $gcmd[2,-1]() { \"${prefix}/${gcmd//"["/"\\["}\" \"\$@\"; }"
+
+      #
+      # This method is inflexible since the aliases are at risk of being
+      # overriden resulting in the BSD coreutils being called.
+      #
+      # (( ${+commands[$gcmd]} )) && \
+      # alias "$gcmd[2,-1]"="${prefix}/${gcmd//"["/"\\["}"
+    done
+
+    return 0
+  }
+  __gnu_utils;
+
+  function hash() {
+    if [[ "$*" =~ "-(r|f)" ]]; then
+      builtin hash "$@"
+      __gnu_utils
+    else
+      builtin hash "$@"
+    fi
+  }
+
+  function rehash() {
+    if [[ "$*" =~ "-f" ]]; then
+      builtin rehash "$@"
+      __gnu_utils
+    else
+      builtin rehash "$@"
+    fi
+  }
+fi
+