补丁：以非交互模式运行

Question

我想自动测试一组仍然完全适用于（更新的）代码库的补丁。为此，我打算跑

patch -p 1 < path/to/patch0.patch

对于所有补丁patch*.patch，检查此命令的返回码，并将其存储在某处。不幸的是，patch在某些情况下似乎可以交互工作。需要交互的典型输出是

can't find file to patch at input line 44
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|Index: foo/docs/faq.html
|===================================================================
|--- foo.orig/docs/faq.html
|+++ foo/docs/faq.html
--------------------------
File to patch: 

有没有办法patch非交互式运行？（也许patch不是这里任务的正确工具。）

Answer 1

使用-f( --force) 选项：

echo a > a
echo b > b
diff -Nu a b > p
rm a b
patch -p 1 < p

can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- a  2016-05-11 16:16:24.115481324 +0700
|+++ b  2016-05-11 16:16:24.115481324 +0700
--------------------------
File to patch: 

（要求输入）。然而，

patch -f -p 1 < p

patch -f -p 1 < p

以退出状态 ( $?) 1退出：

echo $?
1