Bash 语法错误：“[[: 未找到”
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Bash syntax error: "[[: not found"
提问by Justin
I'm working with a bash script that is currently working on a server (RHEL4). I'm developing on my laptop with Ubuntu 10.04, but I don't think the platform is causing the problem.
我正在使用当前在服务器 (RHEL4) 上运行的 bash 脚本。我正在使用 Ubuntu 10.04 的笔记本电脑进行开发，但我认为不是该平台导致了问题。
Here's what's happening: I have a skeleton script that calls another script that does most of the work. However, it makes calls to getConfig.sh a lot. getConfig.sh basically just parses some command line argument (using getopts) and calls a Java program to parse some XML files. Anyways, getConfig.sh is throwing up lots of errors (but still seems to work).
下面是正在发生的事情：我有一个框架脚本，它调用另一个完成大部分工作的脚本。但是，它会大量调用 getConfig.sh。getConfig.sh 基本上只是解析一些命令行参数（使用 getopts）并调用 Java 程序来解析一些 XML 文件。无论如何， getConfig.sh 抛出了很多错误（但似乎仍然有效）。
Here's the message that I'm getting
这是我收到的消息
getconfig.sh: 89: [[: not found
getconfig.sh: 89: [[: not found
getconfig.sh: 94: [[: not found
每次运行时我都会遇到这三个错误；但是，脚本完成并运行 Java 代码。getconfig.sh: 89: [[: 未找到
getconfig.sh: 89: [[: 未找到
getconfig.sh: 94: [[: 未找到
Here's the relavent code section
这是相关代码部分
parseOptions $*
if [[ "${debugMode}" == "true" ]] ; then
DEBUG="-DDEBUG=true"
echo "${JAVA_HOME}/bin/java ${DEBUG} -Djava.endorsed.dirs=${JAXP_HOME} -jar $(dirname #!/bin/bash
)/GetXPath.jar ${XML_File} ${XPath_Query}"
fi
Line 89 is "parseOptions $* and line 94 is "fi"
第 89 行是“parseOptions $*”，第 94 行是“fi”
Thanks for the answers.
感谢您的回答。
回答by Paused until further notice.
If your script is executable and you are executing it like ./getconfig.sh, the first line of your script needs to be:
如果您的脚本是可执行的并且您正在执行它./getconfig.sh，则脚本的第一行必须是：
Without that shebang line, your script will be interpreted by shwhich doesn't understand [[in ifstatements.
如果没有那个 shebang 行，您的脚本将被解释为shwhich[[在if语句中不理解。
Otherwise, you should run your script like bash getconfig.sh, notsh getconfig.sh. Even if your default shell is bash, scripts run with shwill use a reduced set of bash's features, in order to be more compliant with the POSIX standard. [[is one of the features that is disabled.
否则，您应该像 一样运行脚本bash getconfig.sh，而不是sh getconfig.sh. 即使您的默认 shell 是 bash，运行的脚本sh也会使用一组减少的 bash 功能，以便更符合 POSIX 标准。[[是禁用的功能之一。
回答by Gangadhar
If you are checking for equality, shouldn't the if be ?
如果您正在检查相等性，那么 if 不应该是吗？
if [[ "${debugMode}" = "true" ]]; then
....
fi
if [[ "${debugMode}" = "true" ]]; then
....
fi
回答by Daniel Kmak
Use:
用：
bash scriptname.sh
bash scriptname.sh
instead of:
代替：
sh scriptname.sh
sh scriptname.sh
