在getRuntime（）。exec中使用引号 [英] Using Quotes within getRuntime().exec

问题描述

我想使用字符串作为输入来调用bash。类似于：

I'd like to invoke bash using a string as input. Something like:

sh -l -c "./foo"

我想从Java做到这一点。不幸的是，当我尝试使用 getRuntime（）。exec 调用命令时，我收到以下错误：

I'd like to do this from Java. Unfortunately, when I try to invoke the command using getRuntime().exec, I get the following error:

      foo": -c: line 0: unexpected EOF while looking for matching `"'

      foo": -c: line 1: syntax error: unexpected end of file

这似乎与我的字符串没有以EOF终止有关。

It seems to be related to my string not being terminated with an EOF.

有没有办法将特定于平台的EOF插入Java字符串？或者我应该寻找另一种方法，比如在调用sh之前写入临时脚本？

Is there a way to insert a platform specific EOF into a Java string? Or should I be looking for another approach, like writing to a temp script before invoking "sh" ?

推荐答案

使用此：

Runtime.getRuntime().exec(new String[] {"sh", "-l", "-c", "./foo"});

要点：不要加双引号。仅在shell中编写命令行时使用！

Main point: don't put the double quotes in. That's only used when writing a command-line in the shell!

例如， echoHello，world！（在shell中输入）被转换为：

e.g., echo "Hello, world!" (as typed in the shell) gets translated to:

Runtime.getRuntime().exec(new String[] {"echo", "Hello, world!"});

（暂时忘记shell通常内置 echo ，并且正在调用 / bin / echo 。： - ））

(Just forget for the moment that the shell normally has a builtin for echo, and is calling /bin/echo instead. :-))

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