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Day3
scp: secure copy
when you want to copy the file between two Linux os using ssh
scp <nameoffile> username@ipaddress:/<location
expample
scp /tmp/task2.txt amit@192.168.111.130:/home/amit/
The SCP command enables you to conveniently copy files from remote machines to local nodes. You can also use this command to copy files from a virtual machine to the local host
-----------------------------------------------------------
Now How will I practices?
Shell practices: You need to create story?
https://stackoverflow.com/questions/tagged/shell
------------------
Devops: Developers+Operations: It is methodology to implement software devolpment life cycle
Developer: Write the code
Why developer code? Either they are building a new software or they are fixing the issues.
What is the operations? When product has to install in production and do the production take care
Whenever developer fix code--->build package-->test the package-->apply it in production
We are designing a flow where code fix will be package,tested and deployed in the production.
Pipeline
Whatever you are seeing in playstore-->apk package, exe, msi, rpm ,deb
------------------------------------------------------------------------------------
SDLC: Software development life cycle:
-->They plan : Why I need it? Is customer has some demand? (Planning is the first phase)
--> Writing the code
--> Test code ( Functional,system testing)
--> Deliver product
Water fall model
--
|__
up to down (plan (completed)-->coding +Testing--> (need lot procees, that takes times)
2 to 3 years..
But current sceranio, everyone is releasing product in 6 month -1 year
Samsung/Apple/Microsoft
Agile: Any time I want to change anything? can I change?
--->Whenever devolper fix anything--> can we automate this process to complete rest of stuf
code->build->Test-->release
As or when any developer in the product make change, can we go create package and test it out..
software -->100 dev
dev->code change-->immediately-->there is issue-->I can go and revert the DEv A change
----
dev A,B,C,D-->face the issue-->4 dev chagnes-->which code change is failing
CI/CD-->Continuous intergration and continuous delivery (pipeline)
do you know git?
---------------------------
You as developer-->you write code--->60 of us working together-->then how we will share and intergrate code?
Dev->website
3 dev--
1 dev-->Db for website-->In their dev box
1 dev-->frontend
1 dev->middleware
What I need to do to create website??
Intergrate code-->
WE need to publish the code to source code management sites.
git and GitHub
-------------------------------------------
What is git?
You need to manage that code. source code management?
Version control system
Suppose as dev-->you are fixing code-->testing out-->
code is failing-->you try to revert it
When ever you are making the code changes, you must enable the tracking so in -case of failure you revert badc
--->code--> abc-->v1-->describption in the message
--->def-->v2
--> def-->v3
--->hij-->v4
Recording the code change using version
---------------
git-->git is a application for version control. It is by default available in Linux system
You can install on windows and macos
------------------------------------------------------------
Using the git we will do the version control?
What is GitHub/GitLab/bitbucket? Hosting website to host the git projects.
-----------------------------------
What is git Bash for?
Git Bash is an application for Microsoft Windows environments which provides an emulation layer for a Git command line experience. Bash is an acronym for Bourne Again Shell. A shell is a terminal application used to interface with an operating system through written commands.
git init command will covert a directoy into git repository.
git init will create a subdirectory .git, which will do the version control