- 两个目录下包括最底层子目录的同名文件替换
- 有两个参数，第一个是源目录地址，第二个是目的地地址
- 如果只有一个参数默认原地址为当前地址，目的地址为参数
- 地址为绝对地址
- sh replacefile.sh [source] [dest]
>replacefile git:(master) ✗ sh replacefile.sh ~/Desktop/shell/replacefile ~/Desktop/shell/copyfans
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/d/testhtml6.sh -> /Users/gl-wjt/Desktop/shell/copyfans/r/testhtml6.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/d/testhtml7.sh -> /Users/gl-wjt/Desktop/shell/copyfans/r/testhtml7.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/replacefile.sh -> /Users/gl-wjt/Desktop/shell/copyfans/replacefile.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/testhtml.sh -> /Users/gl-wjt/Desktop/shell/copyfans/testhtml.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/testhtml2.sh -> /Users/gl-wjt/Desktop/shell/copyfans/testhtml2.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/testhtml3.sh -> /Users/gl-wjt/Desktop/shell/copyfans/testhtml3.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/testhtml4.sh -> /Users/gl-wjt/Desktop/shell/copyfans/testhtml4.sh (y/n)y
>COPY: /Users/gl-wjt/Desktop/shell/replacefile/testhtml5.sh -> /Users/gl-wjt/Desktop/shell/copyfans/testhtml5.sh (y/n)y
>copy file number is 8