bash 在用于 sed 替换的替换命令“/”中获取错误标志
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Getting bad flag in substitute command '/' for sed replacement
提问by DisplayName
I am facing one issue while using replace in my sed command. I've a file named a.txt, I want to replace a single line with some other line but I am getting above mentioned error.
我在 sed 命令中使用 replace 时遇到一个问题。我有一个名为 的文件a.txt，我想用其他行替换一行，但出现上述错误。
Code I want to replace:
我要替换的代码：
DOMAIN_LOCAL = "http://127.0.0.1:3000";
I want it to replace with any other ip lets say something like below:-
我希望它替换为任何其他 ip 让我们说如下：-
DOMAIN_LOCAL = "http://127.1.1.2:3000";
What I've tried:-
我试过的：-
ip=http://127.1.1.2:3000
sed "s/DOMAIN_LOCAL = .*$/DOMAIN_LOCAL = "$ip";/g" a.txt
But it is giving me following error. Can somebody help here.
但它给了我以下错误。有人可以在这里帮忙吗。
sed: 1: "s/DOMAIN_LOCAL = .*$/DO ...": bad flag in substitute command: '/'
回答by andlrc
You will need to use another delimiter. And escape the $or use single quotes:
您将需要使用另一个分隔符。并转义$或使用单引号：
% ip="http://127.1.1.2:3000"
% sed 's~DOMAIN_LOCAL = .*$~DOMAIN_LOCAL = "'"$ip"'";~' a.txt
DOMAIN_LOCAL = http://127.1.1.2:3000;
When you use /as a delimiter in the substitute command it will be terminated at the first slash in http://:
当您/在substitute 命令中用作分隔符时，它将在第一个斜杠处终止http://：
sed 's/DOMAIN_LOCAL = .*$/DOMAIN_LOCAL = http://127.1.1.2:3000;/'
# ^ here
Breakdown:
分解：
sed 's~DOMAIN_LOCAL = .*$~DOMAIN_LOCAL = "'"$ip"'";~' a.txt
# │ ││└ Use double quotes to avoid word splitting and
# │ ││ globbing on $ip
# │ │└ Exit single quotes
# │ └ Literal double quotes
# └ Using single quotes to avoid having to escape special characters
回答by Darwin.Lau
You may need another delimiter instead of "/", for example "%".It worked for me.
"/"例如"%"，您可能需要另一个分隔符而不是 。它对我有用。
