The command line
CMD seconds into the specified directory
Inefficient operation
Win +r, enter CMD, then jump to the specified directory
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SAO operation
Enter CMD in the folder address bar. The CMD window is displayed and the specified directory is displayed
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SSH and SCP commands
SSH: log in from one machine to another machine SCP: Transfer files from one machine to another machine
You can use the SSH command to log in using a password, but it is still cumbersome. You are advised to configure public key access. Check whether you have generated a public key file before. If not, you need to manually generate one
Windows: In Windows, check whether the id_rsa, id_rsa.pub files exist in drive C > User > User name >.ssh
MAC: in /Users/${own user name}/.ssh folder
Ssh-keygen -t rsa -c "[email protected]" -t Specifies the key type, which is RSA by default. You can omit the -c comment text, such as youremail addressCopy the codeThe directory containing id_rsa (private key) and id_rsa.pub (public key) has been generated.
Win10 PowerShell, Linux, Mac is able to directly use these 2 commands, but Win7 does not support
To log in, add the public key to the ~/.ssh/authorized_keys file on the Linux server
The SSH command format is as follows. The port number is 22 by default
SSH -p < port > < username >@<IP address >Copy the codeIf the local user name is the same as the remote user name, even the user name can be omitted
# hadoop1 SSH hadoop@hadoop1 # Hadoop2 SSH hadoop2Copy the codeThe SCP command format is as follows. The default value is 22
SCP -p < port > <filename> < username >@<IP address >:< destination directory >Copy the codeIf you’ve ever been in a cluster, such as a Hadoop cluster, you’ll know that these two commands are a great way to quickly switch between servers and distribute environment variables and configurations.
Of course, it is also useful in real development, if you want to upload your JAR packages to the test environment. You can submit the code to GitLab and have Jenkins publish it automatically or manually.
However, my habit is to test myself before submitting the code, so I usually run the script manually to upload the JAR package to the server
Win the script
deploy.bat
call mvn clean package -DskipTests=true cd ./build/libsscp demo.jar username@ip:/opt/application/ cd .. /.. / @pauseCopy the codeCommand line tool
I use Xshell on Win and SecurtCRT on MAC (no Xshell on MAC, really hurt).
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SecurtCRT has a super easy to use function, select that copy, right click that paste, and then use Ctrl+C and Ctrl+V. Xshell also supports this functionality, but you need to set up a wave
Tools -> Options
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Right-click to paste content, and select Automatically copy the selected text to the clipboard
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At this point, select that copy, right click that paste, super convenient
Xshell executes the same command in multiple Windows
Executing commands in a cluster makes it easy to check view -> Write -> Write
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In the sidebar below, select all sessions, and commands executed in the sidebar will be executed on all tabs that are currently open
Bold style
Alias various commands
It works on both Linux and Mac
You can define an alias for Linux commands that you often use but that are too long (for example, entering a deep project deployment directory)
Alias defined at the system level
All users can use this alias
For example, if you want to use SSH to switch to server 21, configure the alias
echo "alias go21='ssh mosh@21'">>/etc/profile
source /etc/profile
Copy the codeIf you’re not comfortable with this, just open the /etc/profile file and add alias go21=’ SSH mosh@21 ‘to the file. In this case, just execute go21 and don’t forget source, and you can jump directly to the server 21. You can also configure an alias like the following
Alias tozo = 'CD/root/zookeeper - 3.4.12 / bin'Copy the codeThe tozo command goes directly to the /root/zookeeper-3.4.12/bin directory.
An alias defined at the user level
Only the current user can use this file, but the configuration file is different from /etc/profile to ~/.bash_profile
echo "alias go21='ssh mosh@21'">>~/.bash_profile
source /etc/profile
Copy the codeJSON
Browser formats display JSON
Format and display JSON in Chrome with various plugins such as JSONView. However, the jSON-Handle I have used is the best one. The page is beautiful and you can edit and copy on the right side of the browser, which is really cool.
Edit JSON Format JSON
Recommend 2 websites I use most, the most obvious feature is powerful, no advertising
Web site:jsoneditoronline.org/
When writing interface documents, I often need to edit JSON, and the one I use most often is json Editor Online
JSON is easy to write, and the format is validated in real time, showing crosses to the left when errors occur. Of course, you can also format JSON with this tool, but the appearance level is not too high.
Web site:codebeautify.org/jsonviewer
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It’s a super powerful site, just take a look and see how powerful it is. You think, you don’t think, it has
All kinds of file format conversion all kinds of picture format conversion all kinds of file verification, comparison…
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Postman
There is a Chrome plugin, but you are advised to download one, and many people use only a fraction of postman’s functionality
Save the interface export as a file
Postman has login function. It is suggested to put a Collection for each project, indicating the function of each interface, so that the account can be sent to the test after self-testing, and the test does not need to reconstruct request parameters by itself. Or export your Collection to a file for someone else to import
In addition, the requested URL should be written to support multi-environment switching. Because the domain name of the development environment and the test environment are different, but the subsequent request path is the same.
Multi-environment Configuration
It can be seen that I have configured three environments now. Switch the environment and click the drop-down box to select it. Click the configuration button at the back to configure the environment
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Base_url was used in the previous request path and is equivalent to a key, and this configuration is equivalent to a map
Test login interface
Nowadays, many enterprises login users based on cookies and sessions, testing some need to login interface. I saw one of my colleagues do it earlier, and, seriously, it really showed me
- First log in to the system and get the cookie value from the request head of the interface
- Paste the value of this cookie into the header of the Postman request
- Send request test interface
I’ll send you a picture, you can probably think of the position
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SAO operation
In Postman, all you have to do is ask for the login interface first, and the cookie will be automatically added to the interface after the request, so you don’t have to paste the header every time. You don’t have to click on the login interface again until the cookie expires, just keep testing
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As long as a website has set a cookie, subsequent requests will automatically carry the set cookie, the browser is the same, postman, do not need to manually paste
drawing
ProcessOn
Website: www.processon.com/
Chinese development of online drawing procedures, the renderings are as follows
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drawio
Website: www.draw.io/
This is an online drawing program developed by foreigners
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Xmind
Website: www.xmind.cn
A commonly used mind mapping tool
markdown
Typora
One of the most visually advanced Markdown editors, this may be a bit of a shock for beginners, as it shows the effects in real time while editing the page. It’s good to get used to it, but it can’t be saved to the cloud server
Impression of notes
A very well-known software, left to write, right preview. Can be saved to the cloud server, support multi-terminal. Markdown, mind mapping are supported, but they have to be expensive to use
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code
Share code with pictures
Address: carbon. Now. Sh /
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The main purpose of this is to export the code as an image, which is easy to distribute to multiple platforms, so that the format of the image is not messy border, font and style can be adjusted (I usually remove both border and style, so that the code looks bigger).
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Use web pages to share code
Address: paste.ubuntu.com/
Sometimes when I want others to see the code, I send it to them through chat tools, and the format will be messy, so I usually post the code on the web page for others to see
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Data structures and algorithms
Cattle from
Website: www.nowcoder.com/
There is nothing wrong with visiting this website
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LeetCode
Address: leetcode-cn.com/
On this website you can find all kinds of algorithmic questions that you have encountered during the interview process, and they are the original ones
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Other useful websites
Love course
Address: www.icourse163.org/
I used to watch it when I was in school, and many universities have it in open courses
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Stack Overflow
Address: stackoverflow.com/
Many of the problems encountered are well explained
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Redis command reference
Address: redisdoc.com/
Redis’s various commands are explained in super detail, with lots of demos
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The lab building
Website: www.shiyanlou.com/
Learn Linux and Git, etc., with the experimental floor can not be too cool, online to provide you with the environment and test questions, is to let you practice
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Java knowledge sharing network
Website: www.java1234.com/
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Many books are available as PDF downloads
Linux command
Address: man.linuxde.net/
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Other utility tools
Leak check
This is used in many enterprises to manage the code quality. Many inelegant writing methods in the code can be checked out. It can be integrated with gitLab and strongly recommended to use it
Website: www.sonarqube.org/
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API Management Tools
API management tools I have used include Wiki, Wordfinch, Yapi, Swagger
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Wiki is a text tool. Yapi is an open source project to manage apis. Swagger writes comments directly in code and then exports documentation.
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I think whisperer and Swagger are better. The Language Sparrow supports Markdown syntax, and the page is nice.
Swagger is friendly to the front end and easy to debug, and the back end does not need to write interface documentation, but it is somewhat intrusive to the back end code, in fact, I think it is also ok.
If swagger open source version request entry is in form form, I can write swagger annotation (for writing annotation) and Spring MVC annotation (for requesting mapping), but our infrastructure group rewrote Spring MVC parameter parser, only need to use one annotation, support annotation, request mapping, Invalid parameters return JSON message, do not need to manually verify, super convenient. At the same time, Swagger is integrated into the company’s single sign-on, test sign-on interface is also very convenient.