Dotfile repo initialization script

initDotFiles.py

#!/usr/bin/env python                                                                  
# Sets up the users's dotfiles as links to the git-versioned ones in .dotfiles. 
# It wouldn't be tough to just scan the dotfiles dir to see what matches up        
# with a dotfile in ~ and link based on that, but for now I'm explicitly           
# listing which files to track.                                                    
                                                                                   
import os                                                                          
import shutil                                                                      
                                                                                   
# Key is the dotfile in the home directory, the value is location in the           
# dotfiles directory where the file will be stored (and linked to)                 
fileMap = dict([(".vim", "vim"),                                                   
                (".vimrc", "vim/vimrc"),                                           
                (".gvimrc", "vim/gvimrc"),                                         
                (".bash_profile", "bash/bash_profile"),                            
                (".gitconfig", "git/gitconfig"),                                   
                (".git-completion", "git/git-completion.bash"),                    
                (".gvimrc", "vim/gvimrc"),                                         
                (".screenrc", "screenrc"),                                         
                (".ssh/config", "ssh/config") ])                                   
                                                                                   
homeDirName = os.getenv("HOME")                                                    
dotfilesDirName = os.path.abspath(os.path.dirname(__file__))                       
backupDirName = homeDirName + "/dotfiles_backup"                                   
if not os.path.exists(backupDirName):                                              
    print "Creating backup directory at " + backupDirName                          
    os.mkdir(backupDirName)                                                        
else:                                                                              
    print "Using existing backup directory at " + backupDirName                    
                                                                                   
for k,v in fileMap.iteritems():                                                    
    if os.path.exists(homeDirName + "/" + k):                                      
        print "Moving existing " + k + " to " + backupDirName + "/" + k            
        shutil.move(homeDirName + "/" + k, backupDirName)                          
    else:                                                                          
        print "No " + homeDirName + "/" + k + " exists yet"                        
    print "Linking to " + dotfilesDirName + "/" + v + " as " + homeDirName + "/" + k
    if not os.path.exists(os.path.dirname(homeDirName + "/" + k)) :                
        print "Creating directory " + os.path.dirname(homeDirName + "/" + k)    
        os.makedirs(os.path.dirname(homeDirName + "/" + k))                        
    os.symlink(dotfilesDirName + "/" + v, homeDirName + "/" + k)