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Script description1. Script 1: Solution to reload a large number of library files2. Script 2: Select and switch to the working directory you want to switch Script 1 explains: One employee's centos7 host system had the following problems: implement ldconfig The following error occurred in command time: the library files are empty and the length ...

[GO Development Series - Foundation] Introduction to Go Foundation The Characteristics of Golang Language The Go language not only has the security and performance of static compiler language, but also has the high efficiency of dynamic languag ...

I. docker installation 1. Enter docker hub mirror Warehouse address: https://hub.docker.com/ 2. Search rabbitMq image When you enter the official image, you can see the following types of images; we choose a version with "mangement" (i ...

Synchronize system time through sntp For small Internet of Things devices, few interfaces provide users with data interaction, so the system time of our devices can only be updated locally after obtaining the network time.Then, you need to use the sntp protocol. ntp protocol: The NTP(Network Time Prot ...

Unix Shell exemplar refines Chapter 6 - AWK utility has six exercises, from simple to complex, currently done the first three questions, the latter three questions feel very laborious to do, about loops, arrays, functions, do not know how to do. AWK Exercise 1: Exercise 1 mainly focuses on the operation of regular expressions with patterns. So ...

XSI IPC  There are three kinds of IPCs we call XSI IPC, namely message queues, semaphores, and shared memory. There are many similarities between them. Specific can be seen The same characteristics of XSI IPC This blog focuses on their differences: Message queue Message queues are linked lists o ...

Original Link: http://www.cnblogs.com/riasky/p/3507639.html 1. Thread identification Just as each process has a process ID, each thread has a thread ID.The process ID is unique throughout the system, but the thread ID is only in which i ...

Links to the original text: http://www.cnblogs.com/riasky/p/3481575.html The Conduit Generally, the method of exchanging information between processes can only be through fork or exec transmission to open files, or through the file syst ...

Reprinted please indicate the source http://blog.csdn.NET/pony_maggie/article/details/43889225 Author: Pony   Java Thread priority ranges from 1 (Thread.MIN_PRIORITY) to 10 (Thread.MAX_PRIORITY). If no settings exist, The default priority for threads is NORM_PRIORITY. This value is 5.   demo creates 10 thread instances ...

Index      Indexing can usually greatly improve the efficiency of queries. Without indexing, MongoDB must scan every file in the collection and select those records that meet the query criteria when reading data. The efficiency of this kind of query is very low, especially when dealing with a large amount of data, the query can t ...