如何使用sed替换两个匹配模式之间的所有行（在OSX BSD上）
[英]How do I use sed to replace all lines between two matching patterns (on OSX BSD)
问题描述
I would like to know how to: 
我想知道如何：
Replace all lines between two matching patterns (not include the patterns - exclusive).
替换两个匹配模式之间的所有行（不包括模式-排他）。 Please note that these will be on separate lines. 请注意，这些将在单独的行上。 Replace all lines between and including two matching patterns (inclusive).
替换介于两个匹配模式（包括两个）之间的所有行。 Please note that these will be on separate lines I have started the first, but its not producing the desired results (actaully no results so far). 请注意，这些将在我已经开始的单独的一行上，但是没有产生预期的结果（到目前为止，实际上没有任何结果）。 Please keep in mind that this is for sed on Mac OSX (BSD) . 请记住，这是中美战略经济对话在Mac OSX（BSD）。 The pattern in this case is two html comments on separate lines. 在这种情况下，模式是在单独的行上包含两个html注释 。
My shell script looks like this: 我的shell脚本如下所示：
REPLACEWITH="Replacement text here"
sed -i '' -e "s&\(<!--BeginNotes-->\).*\(<!--EndNotes-->\)&\1$REPLACEWITH\2&" /Users/BlaNameHere/builds/development/index.php
In the head of my index.php file is this excerpt: 在我的index.php文件的开头是以下摘录：
<!--BeginNotes-->
<!--asdasd-->
<script type="application/javascript">var Jaop;</script>
<!--EndNotes-->
example result a 示例结果a
<!DOCTYPE html>
<html>
<head>
<title></title>
<!--BeginNotes-->
Replacement text here
<!--EndNotes-->
</head>
<body>
</body>
</html>
example result b 示例结果b
<!DOCTYPE html>
<html>
<head>
<title></title>
Replacement text here
</head>
<body>
</body>
</html>
2 个解决方案
解决方案1
2 2014-01-07 23:00:40
A perl one-liner: Perl单线：
perl -i -0777 -pe 's/(<!--BeginNotes-->).*(<!--EndNotes-->)/$1'"$REPLACEWITH"'$2/s' index.php
This uses the -0777 option to read the entire file as a single string, which requires the s modifier on the s///s command 它使用-0777选项读取整个文件作为一个字符串，这就需要s上的修饰s///s命令
That one-liner is roughly equivalent to 一线大致相当于
perl -e '
# read the file as a single string
open $in, "<", "index.php";
my $text;
{
local $/;
$text = <$in>;
}
close $in;
# transform the string
$text =~ s/(<!--BeginNotes-->).*(<!--EndNotes-->)/$1'"${REPLACEWITH}"'$2/s;
# write out the new string
open $out, ">", "index.php.tmp";
print $out $text;
close $out;
# over-write the original file
rename "index.php.tmp", "index.php";
'
解决方案2
1 2014-01-08 09:04:01
sed -n ":b
$ !{
N
b b
}
$ {
s|\(<!--BeginNotes-->\).*\(\n\)\([[:blank:]]*\)\(<!--EndNotes-->\)|\1\2\3${REPLACEWITH}\2\3\4|
p
}" /Users/BlaNameHere/builds/development/index.php
You need to load the file into the buffer becasue sed work line by line 您需要将文件加载到缓冲区中，因为sed逐行工作
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