bash 脚本中的 sed 不起作用：但它适用于命令行
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8827097/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Sed inside bash script not working: But it works on command line
提问by Matthew Hoggan
I have tried the following on the command line and they work, but when I place them in a bash script I get an error (see below):
我在命令行上尝试了以下操作并且它们可以工作，但是当我将它们放在 bash 脚本中时出现错误（见下文）：
sed -e "s/INSERT_ME_HERE/"${ROOT_BUILD_HOME}"/g" ./Doxyfile > ./tmp && mv ./tmp ./Doxyfile
sed -e "s/INSERT_ME_HERE/'${ROOT_BUILD_HOME}'/g" ./Doxyfile > ./tmp && mv ./tmp ./Doxyfile
sed -e "s/INSERT_ME_HERE/`echo ${ROOT_BUILD_HOME}`/g" ./Doxyfile > ./tmp && mv ./tmp ./Doxyfile
The error I am getting is:
我得到的错误是：
sed: -e expression #1, char 19: unknown option to `s'
However like I said I am using it from the command line and it works:
但是就像我说的那样，我是从命令行使用它的，它可以工作：
[mehoggan@hogganz400 Doxygen]$ ROOT_BUILD_HOME=MONKEY; sed -e "s/INSERT_ME_HERE/`echo ${ROOT_BUILD_HOME}`/g" ./Doxyfile | grep MONKEY
INPUT = MONKEY
Why does it work under one case and not the other?
为什么它在一种情况下有效，而在另一种情况下无效？
Also ROOT_BUILD_HOMEis set, I echo it right before the sed expression within the shell script.
也ROOT_BUILD_HOME已设置，我在 shell 脚本中的 sed 表达式之前回显了它。
echo `date`: "Going to run doxygen on source and move to ${ROOT_BUILD_HOME}";
回答by ruakh
I'm guessing that ROOT_BUILD_HOMEstarts with a /, which sedis interpreting as ending your replacement-string. Am I right? If so, then try using a different separator:
我猜它ROOT_BUILD_HOME以 a 开头/，它sed被解释为你的替换字符串的结尾。我对吗？如果是这样，请尝试使用不同的分隔符：
sed -e "s#INSERT_ME_HERE#${ROOT_BUILD_HOME}#g" ./Doxyfile > ./tmp && mv ./tmp ./Doxyfile
回答by Sergey Benner
#!/bin/bash
ABC=`echo ${ROOT_BUILD_HOME}`
echo $ABC
sed -e 's/INSERT_ME_HERE/'$ABC'/g' <./Doxyfile > ./tmp && mv ./tmp ./Doxyfile
hope this helps
希望这可以帮助
