Linux比較兩個文件夾

Linux比較兩個文件夾工具： diff

[root@~]# diff -urNa dir1 dir2
　　-a Treat all files as text and compare them line-by-line, even if they do not seem to be text.
　　-N, --new-file
　　　　In directory comparison, if a file is found in only one directory, treat it as present but empty in the other directory.
　　-r When comparing directories, recursively compare any subdirectories found.

　　-u Use the unified output format.