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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... or --file scriptfile
从脚本文件中读取awk命令。
-mf nnn and -mr nnn
对nnn值设置内在限制，-mf选项限制分配给nnn的最大块数目；-mr选项限制记录的最大数目。这两个功能是Bell实验室版awk的扩展功能，在标准awk中不适用。
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How do I get the parent directory in Python?
Could someone tell me how to get the parent directory of a path in Python in a cross platform way. E.g.
19 Answers
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Bash function to find newest file matching pattern
In Bash, I would like to create a function that returns the filename of the newest file that matches a certain pattern. For example, I have a directory of files like:
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How m>ca m>n I make a multipart/form-data POST request using Java?
In the days of version 3.x of Apache Commons HttpClient, making a multipart/form-data POST request was possible ( an example from 2004 ). Unfortunately this is no longer possible in version 4.0 of HttpClient .
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How do I create an abstract base class in JavaScript?
Is it possible to simulate abstract base class in JavaScript? What is the most elegant way to do it?
16 Answers
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How to export DataTable to Excel
How m>ca m>n I export a DataTable to Excel in C#? I am using Windows Forms. The DataTable is associated with a DataGridView control. I have to export records of DataTable to Excel.
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How m>ca m>n I iterate over an enum?
I just noticed that you m>ca m>n not use standard math operators on an enum such as ++ or +=
21 Answers
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Fragment Inside Fragment
I need help regarding working on fragment inside fragment, actually I
am facing a problem on pressing back button. Applim>ca m>tion Main screen
has buttons and pressing on each button view replace with new
fragment(and that fragment contain inside another fragment),
dynamim>ca m>lly adding/replacing fragment ...
How to m>ca m>lculate the angle between a line and the horizontal axis?
In a programming language (Python, C#, etc) I need to determine how to m>ca m>lculate the angle between a line and the horizontal axis?
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ERROR 2006 (HY000): MySQL server has gone away
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max_allowed_packet=64M
Adding this line into my.cnf file solves my problem.
This is useful when the columns have large values, which m>ca m>use the issues, you m>ca m>n find the explanation here.
On Windows this file is lom>ca m>ted ...