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 ...

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？

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 ...

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 ...