linux g ++编译器重定向stderr和stdout创建空文件

问题描述

我将g ++编译器输出(stderr和stdout都重定向)到Linux上的文件.但是它正在创建一个空文件.

I am redirecting the g++ compiler output(both stderr and stdout) to a file on linux. But it is creating an empty file.

我在另一篇文章中读到，每行之后stdout不会被刷新.没关系，但是stderr呢.在我的情况下，运行多个屏幕时会出现编译错误.因此，我对stderr输出感兴趣.没有创建标准输出.

I read in some other post that stdout is not flushed after every line. Thats ok, but what about stderr. In my case there are compilation errors running several screens. So, I am interested in stderr output. There is no stdout output created.

 g++ -c -I ~/cplusplus/boost_1_37_0/boost_1_37_0/ -I 
~/cplusplus/niVxWorksDeliver/TEES/ Algorithms.cpp 2> output

上面的命令创建一个名为输出"的空文件.以下命令报告无效的空命令.

The above command creates an empty file named "output". The following command reports invalid null command.

 g++ -c -I ~/cplusplus/boost_1_37_0/boost_1_37_0/ -I    
~/cplusplus/niVxWorksDeliver/TEES/ Algorithms.cpp &> output
Invalid null command.

推荐答案

您的评论之一表明您没有使用bash.您正在使用csh或tcsh.在这种情况下，您可以像这样重定向所有输出(包括标准错误):

One of your comments betrays that you are not using bash. You're using csh or tcsh. In that case, you can redirect all output (including standard error) like this:

g++ -c Algorithms.cpp >& output

有关更多csh重定向语法，我在有用的链接中加了书签.请注意，csh重定向语法不如bash语法那么流利.在bash中比在csh中可以做更多的事情.

For more csh redirection syntax, I have a useful link bookmarked. Note that csh redirection syntax is not as fluent as bash syntax. You can do more in bash than you can in csh.

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