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HomeBackend DevelopmentPython TutorialUse Bash Shell to recursively copy files in a directory

前言
    今天工作中遇到了一个问题,如果将目录A中的文件拷贝到目录B中(前提目录B没有该文件),并保持文件在目录A的结构。项目重点如下:

    需要在目录B中保持文件在目录A中的结构。假设A目录文件 A/test/1.txt,转移到目录B中应该是B/test/1.txt。同时还需要考虑目录B中是否存在test目录,多级目录就要考虑递归了。(还好,bash shell里写个目录递归遍历还是比较简单的。)
    需要考虑A中文件是否在B中已经存在同名文件,如果存在,则不需要拷贝。

    项目需求示例图如下:

使用Bash Shell对目录中的文件实现递归式拷贝

实现
    项目需求有了,知道设计到递归,代码就很好写了。这里给出一个demo示例,供大家参考。

#!/bin/bash 
   
 function recursive_copy_file() 
 { 
   dirlist=$(ls $1) 
   for name in ${dirlist[*]} 
   do
     if [ -f $1/$name ]; then
       # 如果是文件,并且$2不存在该文件,则直接copy 
       if [ ! -f $2/$name ]; then
         cp $1/$name $2/$name 
       fi
     elif [ -d $1/$name ]; then
       # 如果是目录,并且$2不存在该目录,则先创建目录 
       if [ ! -d $2/$name ]; then
         mkdir -p $2/$name 
       fi
       # 递归拷贝 
       recursive_copy_file $1/$name $2/$name 
     fi
   done
 } 
   
 source_dir="/tmp/test/system"
 dest_dir="/tmp/test/systemback"
   
 recursive_copy_file $source_dir $dest_dir

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