Perl:将系统命令标准输出重定向到$ variable [英] Perl: Redirect system command stdout to $variable

问题描述

如何将system("valgrind --version")的标准输出(不返回值)重定向到变量$ resultStr，例如$ resultStr应该包含"valgrind-3.7.0"吗?

非常感谢您的帮助.

//W

Hi,

How I can redirect the stdout (NOT the return value) of system("valgrind --version")to a variable $resultStr e.g. the $resultStr should contain "valgrind-3.7.0" ?

Your help is highly appreciated.

//W

推荐答案

resultStr例如

resultStr e.g. the

resultStr应该包含"valgrind-3.7.0"吗?

非常感谢您的帮助.

//W

resultStr should contain "valgrind-3.7.0" ?

Your help is highly appreciated.

//W

您要反引号-请参见引用类似运算符，然后查看qx/STRING/和`STRING`.

You want to backquote that - see Quote Like Operators, and look at qx/STRING/ and `STRING`.

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