Programmer Group

File packaging and compression   Self feeling: it's easy to learn how to pack and compress files. Although there are many compression names, several are not commonly used, and several commonly used options are basically universal. It will produce a good result. Just learn the option of one command and remember the names of the remaining command ...

Install tensoflow 1.0 Linux/ubuntu: python2.7: pip install https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.0.1-cp27-none-linux_x86_64.whl python3.5: pip3 install https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.0.1-cp35-cp35m-linux_x86_64.whl Maxos: python2: pip install https://storage.googleapis.com/te ...

Catalog Preface DDL DCL DML 1. Management database of DDL statements 1.1. Create database 1.2. Display database 1.3. Switch database 1.4. View the table information contained in the database 1.4.1. Switch to database to view table information 1.4.2. View the table information outside the library 1.5. Delete database 2. Manage users of ...

mysql is installed by decompressing the installation mode, so that we can install the version we want. The advantage of this installation mode is that I can install it wherever I want. It's easy and pleasant. The installation method of this device is similar to that of jdk, that is, decompressing, and then configuring permissions, services, ...

Many years ago, I was interviewed. Why does the select call support up to 1024 file descriptors? I didn't answer, I didn't even know what select was doing. Over the years, I interviewed people with this question... At that time, I already had an expected answer in my mind that would satisfy me, and my expectation was probably: Macros in th ...

Memory bottleneck free free is to view memory usage, including physical memory, swap memory, and kernel buffer memory. Free-h-s 3 represents the output of memory every three seconds with the following commands [1014154@cc69dd4c5-4tdb5 ~]$ free total used free shared buff/cache available Mem: 119623656 ...

iptables rule persistence Set firewall rules iptables -A INPUT -s 1.1.1.1/32 -p tcp -m tcp --dport 22 -j DROP iptables -A INPUT -s 2.2.2.2/32 -p tcp -m tcp --dport 22 -j DROP iptables -A INPUT -s 3.3.3.3/32 -p tcp -m tcp --dport 22 -j DROP iptables -A INPUT -s 4.4.4.4/32 -p tcp -m tcp --dport 22 -j DROP Save firewall rules service iptabl ...

IX. Interim Framework LNMP Chapter (1) Description of the LNMP architecture 1) Concatenate front-end web services with back-end storage services 2) Mainly implements handling PHP program dynamic requests (2) How the LNMP architecture works L Linux N nginx M mysql P php (3) LNMP Architecture Deployment 1) Install LNMP related software 1. ...

To fully simulate a complete set of consumer + Mgr environment, we may need to configure the following servers:Three serve as the consumer server, and the other three serve as MySQL servers in MGR single master mode. 1, Build Mysql MGR: Download the new version of mysql 8.0.13 wget https://cdn.mysql.com/archives/mysql-8.0/mysql-8.0.13-linux-gl ...

Simple implementation of Linux multi process CS server server side Multi process realizes multi-user connection, i.e. one connection for each user. Here, the server is still used to capitalize the received string and return it to the client. code implementation #include <stdio.h> #include <string.h> #include <netinet/in.h> ...