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awk tools In Linux/UNIX system, awk is a powerful editing tool. It reads input text line by line, searches according to the specified matching mode, formats and outputs qualified content or filters it. It can realize quite complex text operation without interaction. It is widely used in Shell scripts to complete various automatic configuration ...

Overview of awk In Linux/UNIX system, awk is a powerful editing tool. It reads input text line by line, searches according to the specified matching mode, formats and outputs qualified content or filters it. It can realize quite complex text operation without interaction. It is widely used in Shell scripts to complete various automatic config ...

Java Date Class Date class Note: It's java.util.Date; Instead of java.sql.Date, this class is used for database access Example 1: The concept of time origin All data types, whether integer, Boolean, floating point or string, need to be represented in the form of numbers. Date types are no exception, in other words, a date, such as October 1, 20 ...

Download the latest version of liblas source code Download address: https://liblas.org/download.html Necessary conditions: CMake 2.8.1+ and C/C++ compilers Three. Compile 1. First of all, you must have installed Boost libraries with versions 1.38.0 and above. Not installed can refer to my blog: ...

View the encoding used 1. View with status mysql> status -------------- mysql Ver 14.14 Distrib 5.6.44, for Linux (x86_64) using EditLine wrapper Connection id: 22 Current database: Current user: root@localhost SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server versi ...

Usually we need to format the output of time in the process of program processing, so that users or other programs can recognize time more friendly. This paper records how to format time in the process of using golang language. Usually we can use linux shell to format the time conveniently: sh-4.1$ date 2018 Tuesday, 18 September 2002:49:06 CST ...

Last article Speaking of Python multi-threaded multi-processing module in the windows platform and Unix platform system in the underlying implementation methods are different, so the efficiency and memory footprint will be different, this paper continues to record how to achieve multi-threaded parallel ...

I. Providing Web Services Nginx itself is a server of static resources, and other dynamic resources are handed over to other programs by matching. server { listen 80 default_server; listen [::]:80 default_server; # SSL configuration # # listen 443 ssl default_server; # listen [::]:443 ssl default_server; # # Note: You should disable gz ...

Get on with the article New features of Java 8 Due to the large size of the previous article, the focus is not clear enough. This article takes out the Date/Time api of java8 to explain separately. The new date and time tools are all in java.time and its subpackages. New Date/Time API Design Principles The Java 8 Period/Time API is JSR-310 The ...

Grape Command syntax Command Meaning: Set a lifetime for a given key, and when the key expires (lifetime is 0), it will be automatically deleted.Command format: EXPIRE key secondsCommand actual combat: redis> EXPIRE cache_page 30000 # Update expiration time (integer) 1 Return value: Setting successfully returns 1.When the key does not ex ...