Linux 如何使用sed用shell变量替换文件中的字符串
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how to use sed to replace a string in a file with a shell variable
提问by NlaakALD
Geez, I tried the MAN pages, and several posts here. I guess I'm just stupid because I', not getting it.
天哪，我尝试了 MAN 页面，以及这里的几篇文章。我想我只是愚蠢，因为我不明白。
I have a javascript file that has {VERSION} and {DISTRO} where the variable string values should be replaced like this.
我有一个包含 {VERSION} 和 {DISTRO} 的 javascript 文件，其中应该像这样替换变量字符串值。
var MyObject = {
/**
* @property {string} VERSION Holds the current version of the framework
*/
VERSION: '{VERSION}',
/**
* @property {string} DISTRO Holds the distrobution tag of the framework
*/
DISTRO: '{DISTRO}'
};
And this command running for my shell. no matter which whay I do this it does not work or i get errors.
这个命令为我的 shell 运行。无论我做什么，它都不起作用或出现错误。
VERSION="0.9.0"
DISTRO="Developer"
OUT_CAT=$OUT_CAT_DEBUG
${OUT_CAT} | sed -i "s/{VERSION}/$VERSION/" -e "s/{DISTRO}/$DISTRO/" ${OUT_CAT}
#sed -i "s/{VERSION}/$VERSION/" -e "s/{DISTRO}/$DISTRO/" ${OUT_CAT}
So in which way am I being a tard? Seems like it should be very simple and straight forward.
那么我在哪方面是一个迟到者呢？看起来它应该非常简单和直接。
[EDIT] Here is s tripped down version of the script so you can tell what I am doing and where variables are coming from.
[编辑] 这是脚本的绊倒版本，因此您可以知道我在做什么以及变量来自何处。
#!/bin/bash
VERSION="0.9.0"
DEV_DIR=../lib
DIST_DIR=../dist
WEB_DIR=/d/Android_Dev/GitHUB/WEB/h5c3/dist
OUT_CAT_DEBUG=h5c3.debug.cat
OUT_MIN_DEBUG=h5c3.debug.min
OUT_ZIP_DEBUG=$DIST_DIR/h5c3.debug.gz
OUT_CAT_RELEASE=$DIST_DIR/h5c3.release.cat
OUT_MIN_RELEASE=h5c3.release.min
OUT_ZIP_RELEASE=$DIST_DIR/h5c3.release.gz
echo Building Version ""...
if [ "" == debug ]; then
DISTRO="Developer"
OUT_CAT=$OUT_CAT_DEBUG
OUT_MIN=$OUT_MIN_DEBUG
OUT_ZIP=$OUT_ZIP_DEBUG
# empty it out
> ${OUT_CAT}
cat $DEV_DIR/packed.js >> ${OUT_CAT}
#Development support
cat $DEV_DIR/h5c3_debug.js >> ${OUT_CAT}
elif [ "" == release ]; then
DISTRO="Production"
OUT_CAT=$OUT_CAT_RELEASE
OUT_MIN=$OUT_MIN_RELEASE
OUT_ZIP=$OUT_ZIP_RELEASE
# empty it out
> ${OUT_CAT}
cat $DEV_DIR/packed.js >> ${OUT_CAT}
cat $DEV_DIR/h5c3_release.js >> ${OUT_CAT}
else
#publish.sh debug
#publish.sh release
exit 2
fi
#Build Game Core
cat $DEV_DIR/core/stacktrace.js >> ${OUT_CAT}
#Build Externals
cat $DEV_DIR/ext/base64.js >> ${OUT_CAT}
#Build Engine
cat $DEV_DIR/engine/boot.js >> ${OUT_CAT}
#Build Internal Components
cat $DEV_DIR/components/component.js >> ${OUT_CAT}
#Build Systems
cat $DEV_DIR/systems/system.js >> ${OUT_CAT}
#Build Framework
cat $DEV_DIR/framework/page.js >> ${OUT_CAT}
#Build Web App
cat $DEV_DIR/webapp/game.js >> ${OUT_CAT}
if [ "" == debug ]; then
#Development support
cat $DEV_DIR/debugger/profiler.js >> ${OUT_CAT}
cat $DEV_DIR/debugger/console.js >> ${OUT_CAT}
cat $DEV_DIR/debugger/debug.js >> ${OUT_CAT}
cat $DEV_DIR/debugger/developer.js >> ${OUT_CAT}
fi
if [ "" == release ]; then
echo Removing any debug calls from ${OUT_CAT}
sed -i '/this.debug/d' ${OUT_CAT}
fi
echo "Inserting distribution & version in ${OUT_CAT}"
${OUT_CAT} | sed -i "s/{VERSION}/$VERSION/" -e "s/{DISTRO}/$DISTRO/" ${OUT_CAT}
echo Minimizing...[${OUT_CAT} to ${OUT_MIN}]
> ${OUT_MIN}
java -jar yuicompressor-2.4.7.jar ${OUT_CAT} -o ${OUT_MIN}
#echo Compressing...[${OUT_MIN} to ${OUT_ZIP}]
#gzip --best --force ${OUT_MIN}
echo Copying to WEB Folder...
cp --update ${OUT_MIN} ${WEB_DIR}
echo Complete.
exit
采纳答案by nlucaroni
It seems to be that you're trying a combination of piping to sed and using a file. The following will work perfectly fine,
您似乎正在尝试将管道连接到 sed 和使用文件的组合。以下将工作得很好，
sed -i -e "s/{VERSION}/${VERSION}/" -e "s/{DISTRO}/${DISTRO}/" ${OUT_CAT}
You don't need to escape the $, and you don't pipe into sedsince you're using -ito modify the file in-place. You also need to use -efor each expression when their are more than one.
您不需要转义$，也不需要管道进入，sed因为您正在使用-i就地修改文件。-e当每个表达式不止一个时，您还需要使用它们。
EDIT:Here is the bit in the sed manual pages that gives the indication of the issue with -eoption (emphasis mine),
编辑：这是 sed 手册页中的一点，它给出了-e选项问题的指示（强调我的），
If no -e, --expression, -f, or --file option is given, then the first non-option argument is taken as the sed script to interpret. All remaining arguments are names of input files; if no input files are specified, then the standard input is read.
如果没有给出 -e、--expression、-f 或 --file 选项，则第一个非选项参数将作为要解释的 sed 脚本。所有剩余的参数都是输入文件的名称；如果未指定输入文件，则读取标准输入。
回答by Chris Seymour
You don't need to escape the $:
你不需要逃避$：
$ DISTRO="Developer"
$ VERSION="0.9.0"
$ sed -e "s/{VERSION}/$VERSION/" -e "s/{DISTRO}/$DISTRO/" file
var MyObject = {
/**
* @property {string} VERSION Holds the current version of the framework
*/
VERSION: '0.9.0',
/**
* @property {string} DISTRO Holds the distrobution tag of the framework
*/
DISTRO: 'Developer'
};
And what is $OUT_CAT_DEBUGthat you are piping in?
什么是$OUT_CAT_DEBUG你是在管道？
