How to use tmux
1. The role of tmux
(1)It allows simultaneous access to multiple sessions in a single window. This is useful for running multiple command-line programs at the same time.
(2) It allows new windows"Access"Session already exists.
(3)It allows multiple connection windows per session, so multiple people can share the session in rea ...
Posted by lewisstevens1 on Fri, 26 Nov 2021 05:06:11 -0800
1. return of saltstack component
The return component can be understood as the SaltStack system stores or returns the data returned by Minion to other programs. It supports a variety of storage methods, such as MySQL, MongoDB, Redis, Memcache, etc. through return, we can record each operation of SaltStack and provide a data source for futu ...
Posted by scottshane on Thu, 25 Nov 2021 22:00:55 -0800
From Chapter 5 of Linux Shell script introduction, a mess? No such thing!
Parsing website data
$ lynx -dump -nolist http://www.johntorres.net/BoxOfficefemaleList.html |grep -o "Rank-.*" | sed -e 's/ *Rank-\([0-9]*\) *\(.*\)/\1\t\2/' | sort -nk 1 > actresslist.txt
1 Keira Knightley
2 Natalie Portman
3 Monica Bellucci
The website is ...
Posted by CavemanUK on Thu, 25 Nov 2021 19:58:18 -0800
man has nine volumes. System programming is the content of Volume II, and volume V is file format and specification
Parameter pathname file name
Macro with parameter flags as access mode: o_ Rdonly (read only), O_ Wronly, O_ Rdwr (read write) these three must be added
O_ Append, O_ Creat, O_ Excl ...
Posted by OriginalBoy on Thu, 25 Nov 2021 17:04:16 -0800
kubernetes core combat1. Resource creation methodCommand line creationyaml file creation2,namespaceNamespace is the organization mechanism provided by Kubernetes, which is used to classify, filter and manage any group of objects in the cluster. Each workload added to the Kubernetes cluster must be placed in a namespace.Namespace gives scope to ...
Posted by david-remone123 on Wed, 24 Nov 2021 17:51:02 -0800
1. View the current user's home directory
# Switch to Home Directorycd ~# View Home Directory Location
2. Check whether the server is maliciously logged on
# 1. View recent successful password logins:
grep "password" /var/log/auth.log | grep -v Failed | grep -v Invalid
# 2. View recent login failures IP And each IP Number of fa ...
Posted by sebnewyork on Wed, 24 Nov 2021 12:46:04 -0800
1. Arithmetic operator
1.1 introduction to operators
The symbol used to splice variables or constants is called: operator, and the formula connected by operators is called: expression. We often use it in practical development
10 + 3 is an expression, and the + sign is an operator
Note: in Scala, operators are not only operator ...
Posted by Scummy12 on Wed, 24 Nov 2021 12:37:04 -0800
It is said that RT thread OS developed by Chinese people has been for some time and has not been tried. After all, learning a new platform takes a lot of time and energy. The main purpose of testing RT thread this time is to use its dynamic library function. Now the Cortex-M series Arm processor is very powerful. However, ...
Posted by Jay_Seagrave on Wed, 24 Nov 2021 08:19:01 -0800
1. Overview of extern "C"
The main function of extern "C" is to implement other C codes in C++ code. The format is as follows: cplusplus is the default macro defined by the C + + compiler, and the code block part is the C language implementation code. Extern "C" instructs the compiler to compile this part of ...
Posted by kbaker on Wed, 24 Nov 2021 07:59:53 -0800