linux 两个文件夹打patch

需求一,将一个文件的更新运用到另外一个文件: python step 1:   spa diff -u old_file.txt new_file.txt > file.diffdiff -u old_file.txt new_file.txt > file.diff step 2: patch -p0 < file.diffpatch -p0 < file.diff 这样的话old_file.t

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