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selpg

网络黑脸大妈

selpg

selpg

selpg

黑脸大妈

黑脸大妈（selpg）:找到城里的某个人（在提婆城右上角）铁匠: 找到15个熨斗小孩子（antonio）: 给他捡到10个狗尾巴草和他 …

1

This sets the page length to 66 lines , so selpg will treat the input as though it is demarcated into pages of that length .

该命令将页长设置为 66 行，这样 selpg 就可以把输入当作被定界为该长度的页那样处理。

2

To check that this option has worked, after running the selpg command with the "-d " option , run the command "lpstat -t" .

在运行了带 “-d ”选项的 selpg 命令后，若要验证该选项是否已生效，请运行命令 “lpstat-t ”。

3

This way , even if you rename the selpg command to something else , the new name will be shown in messages ; you won't have to modify the code .

用这种方法，即使您将 selpg 命令重命名为别的名称，新的名称也将在消息中显示；您不必修改该代码。

4

This tells selpg to look for form feed characters in the input and treat them as the page delimiters .

该命令告诉 selpg 在输入中寻找换页符，并将其作为页定界符处理。

5

For selpg , there can be at most one such arg , which is taken to be the filename for input .

对于 selpg ，最多有一个这样的参数，它被用作输入的文件名。

6

The destination should exist -- selpg does not check for this .

该目的地应该存在 ―selpg 不检查这一点。

7

Selpg makes extensive use of these functions to give proper messages to the user .

selpg 广泛利用这些函数以给予用户正确消息。

8

Meanwhile , the selpg process runs in the background , with stdout and stderr both redirected to files .

同时，selpg 进程在后台运行，并且标准输出和标准错误都被重定向至文件。

9

I developed selpg for a customer some time ago .

不久前我为一位客户开发了 selpg 。

10

The selpg utility illustrates all of the guidelines and features below .

selpg 实用程序用实例说明了下面列出的所有准则和特性。

11

Selpg also allows the user to send the selected pages directly to a printer, using the "-dDestination" option .

selpg 还允许用户使用 “-dDestination ”选项将选定的页直接发送至打印机。

13

As an exercise , you can modify the code so that selpg accepts one more argument , say "-bNumber" - to indicate the buffer size .

作为练习，您可以修改代码以使 selpg 再接受一个参数，比如说 “-bNumber ”―以表示缓冲区大小。

14

The exception is that you cannot use output redirection or piping in any selpg invocation that contains the "-dDestination" option .

例外情况是您不能在任何包含 “-dDestination ”选项的 selpg 调用中使用输出重定向或管道命令。

15

The above are actual options that selpg supports .

以上是 selpg 支持的实际选项。

16

Selpg writes pages 10 to 20 to its stdout , which is thrown away; error messages appear on the screen .

selpg 将第10 页到第20 页写至标准输出，标准输出被丢弃；错误消息在屏幕出现。

17

If there is not another arg , selpg assumes input is from stdin.

如果没有其它参数，则 selpg 假定输入来自标准输入。

18

The advantage is that you can continue doing other work while selpg runs .

这样做的好处是您可以在 selpg 运行时继续做其它工作。

19

That is, if neither a "-lNumber" nor a "-f" option is given , it is understood that the pages of are fixed length, 72 lines each .

也就是说，如果既没有给出 “-lNumber ”也没有给出 “-f ”选项，则 selpg 会理解为页有固定的长度（每页 72 行）。

20

Pages 10 through 20 are written to selpg 's stdout , the screen .

将第10 页到第20 页写至 selpg 的标准输出（屏幕）。

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