install in rvm-0.0.57 vs install in rvm-0.0.58

@@ -1,23 +1,23 @@
 #!/bin/bash
 
-user=`whoami`
-if [ "$user" = "root" ] ; then
-  echo -e "\033[0;31m <e> \033[0mroot user support is not yet implemented.\033[0m"
+user="$(whoami)"
+if [ "root" = "$user" ] ; then
+  echo -e "$(tput setaf 1) <e> root user support is not yet implemented.$(tput sgr0)"
   exit 1
 fi
 
-item="\033[0;32m* \033[0m"
-question="\n\033[0;32m<?>\033[0m"
+item="$(tput setaf 2)* $(tput sgr0)"
+question="\n$(tput setaf 2)<?>$(tput sgr0)"
 cwd=$(pwd)
-source_dir="${source_dir:-`dirname $0 | xargs dirname`}"
+source_dir="${source_dir:-"$(dirname $0 | xargs dirname)"}"
 if [ ! -d "$source_dir" ] ; then unset source_dir ; fi
 source_dir="${source_dir:-$cwd}"
 rvm_path=~/.rvm
 
 # State what is required to use rvm
-echo -e "\n\033[0;32mrvm\033[0m\n\n    shell scripts that allows a user to manage multiple ruby versions in their own account."
+echo -e "\n$(tput setaf 2)rvm$(tput sgr0)\n\n    shell scripts that allows a user to manage multiple ruby versions in their own account."
 echo -e "\n    Installing rvm to ~/.rvm/ ..."
 for dir_name in src scripts bin log archives config gems examples ; do
   mkdir -p $rvm_path/$dir_name
 done
 
@@ -44,11 +44,11 @@
 
 echo -e "\n    Ensuring that rvm script location in $file is scripts/rvm not bin/rvm for: ~/.bash_profile, ~/.bashrc, ~/.zshrc..."
 for file in ~/.bash_profile ~/.bashrc ~/.zshrc ; do
   if [ -s $file ] ; then
     if [ -L $file ] ; then         # If the file is a symlink,
-      actual_file=`readlink $file` # read the link target so we can preserve it.
+      actual_file="$(readlink $file)" # read the link target so we can preserve it.
     else
       actual_file="$file"
     fi
 
     grep 'rvm\/bin\/rvm' $actual_file > /dev/null
@@ -71,50 +71,50 @@
 if [ -f ~/.rvm/bin/rvm ] ; then
   echo -e "\n    Removing old rvm file from ~/.rvm/bin/rvm..."
   rm -f ~/.rvm/bin/rvm
 fi
 
-system=`uname`
-echo -e "\n    \033[0;33mNOTES: \033[0m"
-if [ "$system" = "Linux" ] ; then
-  rvm_apt_get_binary=`which apt-get 2> /dev/null`
-  rvm_emerge_binary=`which emerge 2> /dev/null`
-  rvm_pacman_binary=`which pacman 2> /dev/null`
-  rvm_yum_binary=`which yum 2> /dev/null`
+system="$(uname)"
+echo -e "\n    $(tput setaf 3)NOTES: $(tput sgr0)\n"
+if [ "Linux" = "$system" ] ; then
+  rvm_apt_get_binary="$(which apt-get 2> /dev/null)"
+  rvm_emerge_binary="$(which emerge 2> /dev/null)"
+  rvm_pacman_binary="$(which pacman 2> /dev/null)"
+  rvm_yum_binary="$(which yum 2> /dev/null)"
 
   if [ ! -z "$rvm_apt_get_binary" ] ; then
-    echo -e "      $item For jRuby (if you wish to use it) you will need:"
-    echo -e "         $ sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk"
-    echo -e "      $item For ree (if you wish to use it) you will need:"
-    echo -e "         $ sudo apt-get install libreadline5-dev libssl-dev bison"
+    echo -e "    $item For jRuby (if you wish to use it) you will need:"
+    echo -e "       $ sudo apt-get install sun-java6-bin sun-java6-jre sun-java6-jdk"
+    echo -e "    $item For ree (if you wish to use it) you will need:"
+    echo -e "       $ sudo apt-get install libreadline5-dev libssl-dev bison"
 
   elif [ ! -z "$rvm_emerge_binary" ] ; then
-    echo -e "      $item For jRuby (if you wish to use it) you will need:"
-    echo -e "         $ sudo emerge dev-java/sun-jdk dev-java/sun-jre-bin"
+    echo -e "    $item For jRuby (if you wish to use it) you will need:"
+    echo -e "       $ sudo emerge dev-java/sun-jdk dev-java/sun-jre-bin"
 
   elif [ ! -z "$rvm_pacman_binary" ] ; then
-    echo -e "      $item For jRuby (if you wish to use it) you will need:"
-    echo -e "         $ sudo pacman -Sy jdk jre"
+    echo -e "    $item For jRuby (if you wish to use it) you will need:"
+    echo -e "       $ sudo pacman -Sy jdk jre"
 
   elif [ ! -z "$rvm_yum_binary" ] ; then
-    echo -e "      $item For ree (if you wish to use it) you will need:"
-    echo -e "         $ yum install -y rpm-build gcc gcc-c++ redhat-rpm-config ; then download and rpmbuild and install the sdk, Have fun..."
+    echo -e "    $item For ree (if you wish to use it) you will need:"
+    echo -e "       $ yum install -y rpm-build gcc gcc-c++ redhat-rpm-config ; then download and rpmbuild and install the sdk, Have fun..."
 
   else
-    echo -e "      $item For jRuby (if you wish to use it) you will need:"
-    echo -e "         The SUN java runtime environment and development kit."
+    echo -e "    $item For jRuby (if you wish to use it) you will need:"
+    echo -e "       The SUN java runtime environment and development kit."
   fi
-elif [ "$system" = "Darwin" ] ; then
-  echo -e "        $item Be sure that you have XCode Tools installed in order to use rvm."
-  echo -e "        $item If you intend on installing MacRuby you must install LLVM first."
+elif [ "Darwin" = "$system"  ] ; then
+  echo -e "      $item Be sure that you have XCode Tools installed in order to use rvm."
+  echo -e "      $item If you intend on installing MacRuby you must install LLVM first."
 fi
 
 echo -e "      $item In order to use rvm the following line must occur in your shell's loading files, after all path/variable settings.:"
 echo -e "      $item if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi"
 echo -e "      $item CLOSE THIS SHELL AND OPEN A NEW ONE in order to use rvm."
 
-echo -e "\n    \033[0;33mRTFM: \033[0m http://rvm.beginrescueend.com/ \n"
-echo -e '\033[0;32mw⦿‿⦿t!\033[0m'
+echo -e "\n    \033[0;33mRTFM: $(tput sgr0) http://rvm.beginrescueend.com/ \n"
+echo -e "$(tput setaf 2)w⦿‿⦿t!$(tput sgr0)"
 echo -e "\n    ~ Wayne\n"
 
 source $rvm_path/scripts/rvm
 rvm -v
 echo