To be able to print bar codes, I present the barcode can not print bar codes, I do not know what was the problem, Iw...

要能够打印出条码条，目前我的条码还不能打印出条码，我不知道问题出在哪，我想请问哪位高手给我点指示。

youdao

This example will print only those lines where field one equals foo and field two equals bar.

该示例只打印第一个字段等于foo且第二字段等于bar的行。

youdao

For example, you can print some basic information on the xterm title bar using the echo command.

例如，可以使用 echo 命令在 xterm 标题栏上显示一些基本信息。

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A progress bar is not supposed to print one hundred lines just to update its status; generally we like to see a little animation.

一个进度条不应该是打印100行,只是更新它的状态，一般地，我们,想看到一点生机。

哈佛公开课 - 计算机科学课程节选

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