sed错误“未终止的”命令“故障排除 [英] sed error "unterminated 's' command" troubleshooting

问题描述

我正在构建一个脚本，将在其他的东西，用文件夹路径替换XML文件中的模式。

I am building a script that will, among other things, replace a pattern in an XML file with a folder path.

sed 命令我试图使用是：

SEDCMD="s|PATHTOEXPORT|$2|"

其中 $ 2 是命令行参数那里有文件夹路径。

where $2 is the command-line parameter that has the folder path in it.

以后调用：

sed -e $SEDCMD $FILTER > $TEMPFILTER

但是，在运行命令时，我收到一个unterminated's'命令错误。

However, on running the command, I am getting an "unterminated 's' command" error.

我该如何解决？我已经尝试更改用于分隔正则表达式的字符（从 / 到 | ）。我试过引用（以不同的方式）命令行参数。

How can I get around this? I've tried changing the characters used to separate the regex (from / to |). And I've tried quoting (in different ways) the command-line parameter.

推荐答案

shell正在看到解析内容的 $ SEDCMD 。如果您使用的是Shell脚本（包括Makefile），则应始终使用双引号保护所有扩展变量。双引号将强制可变插值，但保护任何shell元字符进一步解释。

The shell is seeing the parsing the contents of $SEDCMD. If you’re using this from a shell script, including a Makefile, you should always protect all your expanded variables with double quotes. The double quotes will force variable interpolation but protect any shell metacharacter from further interpretation.

sed -e "$SEDCMD" "$FILTER" > "$TEMPFILTER"

我认为 $ FILTER 和 $ TEMPFILTER 是文件名？我也引用了他们，以防万一它们含有诸如空白或其他类型的shell元字符之类的邪恶的东西;很奇怪，是的，但它是已知的事情发生。经常在文件名上运行重命名'/ \s + / _ / g'，以清除它们的空格，但对于其他人，您必须更加小心方法例如，如何处理星星与问号与括号和括号等。

I assume that $FILTER and $TEMPFILTER are filenames? I’ve quoted them, too, just in case they contain evil things like whitespace or other sorts of shell metacharacters; bizarre, yes, but it’s been known to happen. A regularly run rename 's/\s+/_/g' on filenames to clean them of whitespace, but for the others, you'll have to take a more careful approach; e.g., what to do with stars vs question marks vs brackets and parens, etc.

如果添加 -x 和/或 -v 到你的shell命令行，你会得到一些跟踪调试，我认为可能会显示你在这里的错误。

If you add -x and/or -v to your shell command line, you’ll get some trace debugging, which I think would likely have shown where you went amiss here.

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