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‎Bash/commands/README.md

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WIP
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- `whereis` - Find the path of that executable file.
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### List operation
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- `ls` - Shows list.
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- `-a` - Hidden file.
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- `-l` - Persmission.
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- `-R` - Show sub dir.
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### Changing dir operation
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- `cd <folder-name>` - Change Dir.
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- `cd ..` - Go one Directory back.
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- `cd` - Go to home.
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- `cd ../<foldername>` - Open a previous dir folder.
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- `cd <path>` - Open a dir with the path.
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### File/Folder Ope.
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- `mkdir <new-dir-name>` - Create a new folder.
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- `mkdir -p test/test1/test2` - Craete a dir between two directories.
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- `touch <new-file-name>` - create a blank file.
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- `pwd` - Present working directory.
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- `cat <filename>` - Display file content.
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- `cat > <new-file-name>` - Create a file.
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- `cat >> <filename>` - Append the file.
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- `cat <filename> <filename2> ` - Display 2 files at a time.
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- `cat <filename> <filename2> > <newfile-name>` - Merge both of file content in a single one.
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- `cat <file-name> | tr > <new-file-name>` - Translate the file.
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- `cut -c 1-2 <filename>` - cut the file with colum wise
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- `echo "Hello" >> <file-name>`
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###
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- `man <commad name>` - Know about the command usages and options.
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- `man <commad name>` - know about the command.
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### File/Folder operation
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- `cp <file-name> <new-fie-name>` - Make a copy of a file in the current location.
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- `mv <file-name> <dir-path>` - Move a file from a one dir to a another.
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- `mv <file-name> <new-fie-name>` - Rename a file.
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- `mv -R <dir-name> <dir-path>` - Move Dir
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- `rm <file-name>` - Remove a file
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- `rm -R <file-name>` - Delete a folder with dir included.
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- `head <file-name>` - Will display first 10 lines of a file.
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- `tail <file-name>` - Will display last 10 lines of a file.
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-`-n 2` - will display last 2 lines.
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- `diff <file-1> <file-2>` - Show diff between the two files.
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- `locate <file>` - To find out the file.
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- `find <file/folder-name>` - Find a file/folder.
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- `find <dir-name>` - Find files inside the dir
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- `find .-type d` - Show only dir.
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- `.-type f` -Sshow only files.
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- `.-type f -name "*.txt"` - Show only files with that specfic name.
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- `.-type f -iname "*.txt"` - Show only files with that specfic name - not case sentive (i)
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- `.-type f -mmin -20` - Show files which modify less than 20 min ago.
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- `.-type f -mmin +20` - show files which modify more than 20 min ago.
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- `.-type f -maxdepth 2` - Will only show 1 folder deep.
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- `.-size +1k` - will only show file/folder with size of 1kb
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### System commands
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- `ps aux` - processes which are running
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- `df` - Check the capacity and storage details.
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- `m` - In megabyte) or
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- `hg` - (gigabyte).
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- `du` - Disk usages capcity
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- `-h` (human readable)
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- `echo` - Get a output of a string
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- `echo $PATH` - Check the path varibale
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- `sudo` - Admin command
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- `sudo chown root text.txt` - chnage owner
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- `!<command-name>` - Run the pevious command
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- `git add .; git commit -m "message"` - Run mutiple commands at a time
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- `sort <file-name>"` - sort the file
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- `job`
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- `wget <url>` - download the file from the URL
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- `top` - what processes are running
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- `kill <process-id>` -stop that process
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- `Uname` -
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- `zip <file-1> <file-2>` - Zip Two or more files
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- `Unzip <file-name>` - Unzip files
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- `useradd <name>`
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- `passwd <name>`
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- `uname -<flag>` -o -m -r
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- `lscpu` - get cpu details
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- `free` - free memory
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- `vmstat` - virtual memory
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- `lsof` - list all the open file
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- `xdg-open <file-fath>` - open the folder (graphical window) of a file/folder with path.
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- `xdg-open .` - open the folder of the current directory.
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- `vi ~/.bashrc` - set your Alias
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- `echo -n 'username' | base64`
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### Networking
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- `nslookup google.com`
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- `netstat` -
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- `hostname` -
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- `whoami` -
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- `ping google.com`
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### Permissions
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- `chmod u=rwx,g=rxw,o=rwx <file-name>` READ, WRITE AND EXECUTE
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- `chmod 777 <file-name>` - 4- Read, 2- Write, 1 - Execute
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- `find . -perm 777 ` - will only show file/folder with size of 1kb
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- `grep <keyword> <file-name>` - To search if the keyword is presnt in the file or not
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- `grep -w <keyword> <file-name>` - To search if the keyword is presnt in the file or not (complete word)
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- `grep -i <keyword> <file-name>` - To search if the keyword is presnt in the file or not (not case sens)
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- `grep -n <keyword> <file-name>` - To search if the keyword is presnt in the file or not (Line number)
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- `grep -B <keyword> <file-name>` - Show Line before that keyword
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- `grep -win <keyword> ./*.txt` - To search if the keyword is presnt in the file in current dir
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- `grep -win -r <keyword> .*`
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- `history | grep "ls -l"` - Pipping, we filter out the things
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```
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histroy
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!<number-from-history>
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```
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# Operators
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- `ping google.com & pingfacebook.com`
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- `echo "google.com" && echo "facebook.com"` - second will oly run if first is sucessful
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- `echo "google.com" && {echo "facebook.com"; eco "pradumnasaraf.co"}`
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- `echo "google.com" || echo "pingfacebook.com"`
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- `echo "google.com" || echo "pingfacebook.com"`
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- `rm -r !(file.txt)`
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- `printevnv` - to print all th env.

‎Git/README.md

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## Concepts
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Git is free and open source software for distributed version control. Official [website](https://git-scm.com/)
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## Resources
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- [learngitbranching.js.org](https://learngitbranching.js.org/)

‎Git/commands/README.md

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- Show commit log history
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```bash
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git log
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```
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- Show which file git is tracking and are stagged/unstagged
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```bash
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git status
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```
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- Stage a file
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```bash
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git add [file-name]
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```
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- Make the repo chnages according to that commit
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```bash
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git reset [commit-hash]
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```
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- Change the date and time of last commit
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```bash
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git commit --amend --date="YYYY-MM-DD HH:MM:SS
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```
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- Remove/reset all the commits
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```bash
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git update-ref -d HEAD
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```
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- Check the git config
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```bash
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git config --list
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```
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- Create a new brach
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```bash
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git branch <branch-name>
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```
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- Checkout a branch
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```bash
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git checkout <branch-name>
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```
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- Create and Checkout branch with a single command
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```bash
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git checkout -b <branch-name>
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```

‎Kubernetes/README.md

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echo -n "value" | base64
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```
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## StatefulSet
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- Any application that stores data to keep it state, like database. In this the name and endpoint stays same when the pods restarted.
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## Secret and ConfigMap as volume
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We can mount Config and Secret as a volume

‎Networking/README.md

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## Concepts
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## WIP
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‎README.md

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<br>
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<br>
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## Bash Scripting
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## Bash
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<img align="right" src="https://user-images.githubusercontent.com/51878265/200594989-b1406680-ed41-478a-84d5-7c35b287e112.png" height="120" alt="bash">
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## Git
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<img align="right" src="https://user-images.githubusercontent.com/51878265/200594978-178d2d30-7ef7-45c6-b4db-e24a95c7a067.png" height="120" alt="git">
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<img align="right" src="https://user-images.githubusercontent.com/51878265/202784470-2c813581-7160-4aaf-b96c-35187795d05b.png" height="120" alt="git">
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- [Notes](Git/README.md)
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- [Commands](Git/commands/README.md)
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<br>
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<br>
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<br>
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<br>
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## YAML
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<img align="right" src="https://user-images.githubusercontent.com/51878265/202765143-55758916-b631-4c18-aaad-718b42507d67.png" height="120" alt="YAML">
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- [Notes](YAML/README.md)
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- [Syntax](YAML/syntax/README.md)
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<br>

‎YAML/README.md

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## YAML - YAML Ain't Markup Langugae
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- Data format used to exchnage data.
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- Similar to XML & JSON.
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- We can't add commands.
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- Simple and easy to read.
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- Strict syntax - (Indentation)
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- More powerful to represent complex data.
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- Parsing is easy
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## Usage
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- Use in config files (Docker/Kubernetes)
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- used Logs, cache, etc
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#### YAML tools
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[yamllint](http://www.yamllint.com/) - Check the the format of the file

‎YAML/syntax/README.md

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### Key Value pair
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```yaml
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Name: "Pradumna Saraf"
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1: "This a list"
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```
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### List
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```yaml
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- apple
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- mango
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- Banana
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- banana
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```
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or
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```yaml
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cities: [new delhi, patna,gujrat]
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```
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### String and Variables
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```yaml
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name: Pradumna Saraf
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fruit: "Mango"
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job: 'Advocate'
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age: 65
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marks: 10.33
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booleanValue: No, N, fasle, Fasle, FALSE
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```
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### Multiline String
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```yaml
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Address: |
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01
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Delhi
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India
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```
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Single line in multiple line.
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```yaml
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message: >
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This all
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will be in a single
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line
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```
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### Nested Mapping
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```yaml
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names: Pradumna
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role:
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age: 22
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job: student
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```
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### Nested Sequence
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```yaml
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-
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- mango
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- apple
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- banana
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-
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- marks
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- roll
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```
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##### Specify the data type
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```yaml
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# Integer
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Zero: !!int 0
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postiveNumber: !!int 45
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negativeNumber: !!int -45
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hexa: !!int 0x45
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# Float
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mark: !!float 56.55
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infinity: !!float .inf
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not a num: .nan
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itNot: !!bool false
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# String
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string: !!str "hello"
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# Null
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surnmae: !!null #null or NULL ~
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~: this a null key
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# Exponential Numbers
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myNum: 6.22ES56
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# Dates and time
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date: !!timestamp 2002-01-02
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no Time zone: 2012-12-15T02:59:43
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India Time: 2012-12-15T02:59:43 +5:30
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```

‎k8s-deployment/deployemnt.yaml

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