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bash shell脚本编程经典实例 (第2版)
book

bash shell脚本编程经典实例 (第2版)

by Carl Albing, JP Vossen
January 2021
Intermediate to advanced
581 pages
15h 7m
Chinese
Posts & Telecom Press
Content preview from bash shell脚本编程经典实例 (第2版)
标准输出
47
2.19
 重定向不起作用时保存输出
2.19.1
 问题
你使用了
>
,但是有些(或全部)输出仍旧出现在屏幕上。
例如,编译器产生了下列错误消息:
$
gcc bad.c
bad.c: In function `main':
bad.c:3: error: `bad' undeclared (first use in this function)
bad.c:3: error: (Each undeclared identifier is reported only once
bad.c:3: error: for each function it appears in.)
bad.c:3: error: parse error before "c"
$
因为想要获取这些消息,所以你尝试重定向输出:
$
gcc bad.c > save.it
bad.c: In function `main':
bad.c:3: error: `bad' undeclared (first use in this function)
bad.c:3: error: (Each undeclared identifier is reported only once
bad.c:3: error: for each function it appears in.)
bad.c:3: error: parse error before "c"
$
但是,看起来重定向好像没起什么作用。实际上,如果检查重定向文件,你会发现这个文 ...
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Publisher Resources

ISBN: 9787115553782