王顺刚(网名:沐多)，一线码农，从事工控行业，目前在一家工业自动化公司从事工业实时现场总线开发工作，喜欢钻研Linux内核及xenomai，个人博客 wsg1100，欢迎大家关注！ 顺刚，公众号：Linux阅码场xenomai3.1+linux构建linux实时操作系统-基于X86_64和arm 本文介绍为什么 ...

因为有一部分用的是第三发的库，里面有printf输出异常信息，需要把这些内容写入日志，同时还要在屏幕上显示，该怎么实现？

不少人在调试多线程程序时，遇到过各种各样看似奇怪的问题。比如，本来很容易复现的问题，调试时却莫名其妙地消失了；或者，本来程序可以正常运行的，调试时却总是异常退出。 究其原因，是因为程序的正常执行逻辑在调试的过程中受到了干扰。比如 ...

Even if you're already familiar with the printf command, if you got your information via "man printf" you may be missing a couple of useful features that are provided by bash's built-in version of the ...

The printf command offers well-defined behavior following the POSIX standard, which means it works the same way across shells ...

In my last article, "Fancy Tricks for Changing Numberic Base", I explored the surprising ability of the Linux shell to convert numeric bases on the fly, including this sweet little snippet that ...

When you have a width specification of 1 (like you do in the second line) the output will be H or T. If you have anything else, the output will be HEADS or TAILS. But first, we need to add the %H ...