Linux 存在完整路径时，如何使用补丁在不同文件夹上为文件夹应用 diff 文件？
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How to apply a diff file for a folder, using patch, on a different folder when full path is present?
提问by Dan Nissenbaum
I have downloaded a diff file to modify a number of files within a versioned project directory (Xerces 2.8). The diff file contains the full path for each "left" file (the one represented by the - signs). The "right" file (+ signs) contains a relative path. For example:
我已经下载了一个 diff 文件来修改版本化项目目录 (Xerces 2.8) 中的许多文件。diff 文件包含每个“左”文件（由 - 符号表示的文件）的完整路径。“正确”文件（+ 号）包含一个相对路径。例如：
--- /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_textproc_xercesc/work/xerces-c-src_2_8_0/src/xercesc/util/Platforms/MacOS/MacCarbonFile.cpp 2007-08-28 20:44:07.000000000 +0200
+++ src/xercesc/util/Platforms/MacOS/MacCarbonFile.cpp 2009-10-28 19:37:22.000000000 +0100
My local copy of the project directory that I'd like to update with the diff file is, of course, at a different full path.
我想用 diff 文件更新的项目目录的本地副本当然位于不同的完整路径中。
I cannot figure out where to place the diff file (or rather, in what directory to position myself when I run patch) and what command to run.
我不知道在哪里放置 diff 文件（或者更确切地说，在我运行时将自己定位在哪个目录中patch）以及要运行的命令。
Because the second (+) file is a relative path, I thought that positioning myself in the proper location in my local file system so that the relative path is correct - and then issuing the command
因为第二个 (+) 文件是相对路径，我认为将自己定位在本地文件系统中的正确位置，以便相对路径正确 - 然后发出命令
patch -i patchfile
... would work. It does not (instead, patchpresents me with a prompt for each file because it cannot locate it).
... 会工作。它没有（相反，patch向我显示每个文件的提示，因为它无法找到它）。
What command should I issue to get the diff file to merge using patch?
我应该发出什么命令来合并 diff 文件patch？
采纳答案by Ignacio Vazquez-Abrams
Pass -pfollowed by the appropriate number of path prefixes to strip.
传递-p后跟适当数量的路径前缀以进行剥离。
