#xc function courtesy of http://gist.github.com/subdigital/5420709
function xc {
  local xcode_proj
  xcode_proj=(*.{xcworkspace,xcodeproj}(N))
  if [[ ${#xcode_proj} -eq 0 ]]; then
    echo "No xcworkspace/xcodeproj file found in the current directory."
  else
    echo "Found ${xcode_proj[1]}"
    open "${xcode_proj[1]}"
  fi
}

function xcsel {
  sudo xcode-select --switch "$*"
}

alias xcb='xcodebuild'
alias xcp='xcode-select --print-path'
alias xcdd='rm -rf ~/Library/Developer/Xcode/DerivedData/*'

if [[ -d $(xcode-select -p)/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app ]]; then
  alias simulator='open $(xcode-select -p)/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app'
else
  alias simulator='open $(xcode-select -p)/Applications/iOS\ Simulator.app'
fi

#xc function courtesy of http://gist.github.com/subdigital/5420709
function xc {
  xcode_proj=`ls | grep "\.xc" | sort -r | head -1`
  if [[ `echo -n $xcode_proj | wc -m` == 0 ]]
  then
    echo "No xcworkspace/xcodeproj file found in the current directory."
  else
    echo "Found $xcode_proj" 
    open "$xcode_proj" 
  fi
}

function xcsel {
  sudo xcode-select --switch "$*"
}

alias xcb='xcodebuild'
alias xcp='xcode-select --print-path'
alias xcdd='rm -rf ~/Library/Developer/Xcode/DerivedData/*'

if [[ -d $(xcode-select -p)/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app ]]; then
  alias simulator='open $(xcode-select -p)/Platforms/iPhoneSimulator.platform/Developer/Applications/iPhone\ Simulator.app'
else
  alias simulator='open $(xcode-select -p)/Applications/iOS\ Simulator.app'
fi

--- 
+++ 
@@ -1,12 +1,12 @@
 #xc function courtesy of http://gist.github.com/subdigital/5420709
 function xc {
-  xcode_proj=`ls | grep "\.xc" | sort -r | head -1`
-  if [[ `echo -n $xcode_proj | wc -m` == 0 ]]
-  then
+  local xcode_proj
+  xcode_proj=(*.{xcworkspace,xcodeproj}(N))
+  if [[ ${#xcode_proj} -eq 0 ]]; then
     echo "No xcworkspace/xcodeproj file found in the current directory."
   else
-    echo "Found $xcode_proj" 
-    open "$xcode_proj" 
+    echo "Found ${xcode_proj[1]}"
+    open "${xcode_proj[1]}"
   fi
 }
 
Use zsh globbing instead of ls + grep in xc function

Uses zsh arrays and globbing to find .xcworkspace and .xcodeproj files.
