学步园

递归遍历某个文件夹下的所有文件是一项很常见的操作，总结通过shell和Python来递归遍历文件夹的脚本如下。

1.  shell version

   #!/bin/bash
    
   function walk()
   {
     for file in `ls $1`
     do
       local path=$1"/"$file
       if [ -d $path ]
        then
         echo "DIR $path"
         walk $path
       else
         echo "FILE $path"
       fi
     done
   }
    
   if [ $# -ne 1 ]
   then
     echo "USAGE: $0 TOP_DIR"
   else
     walk $1
   fi

2. Python version 1, using os.listdir

   def os_list_dir(top_dir):
     for file in os.listdir(top_dir):
       file_path = os.path.abspath(os.path.join(top_dir, file))
       if os.path.isfile(file_path):
         print 'FILE', file_path
       elif os.path.isdir(file_path):
         print 'DIR', file_path
         os_list_dir(file_path)

3. Python version 2, using os.walk

   def os_walk(top_dir):
     for parent, dirnames, filenames in os.walk(top_dir):
       for filename in filenames:
         print 'FILE', os.path.abspath(os.path.join(parent, filename))
       for dirname in dirnames:
         print 'DIR', os.path.abspath(os.path.join(parent, dirname))
       #del dirnames[:]  #uncomment this line to not walk recursively

4. Python version 3, using os.path.walk

   def os_path_walk(top_dir):
     def print_name(arg, dirname, files):
       for file in files:
         file_path = os.path.abspath(os.path.join(dirname, file))
         if os.path.isfile(file_path):
           print 'FILE', file_path
         elif os.path.isdir(file_path):
           print 'DIR', file_path
       #del files[:] #uncomment this line to not walk recursively
    
     os.path.walk(top_dir, print_name, None)

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