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 GIT

001. What is git reset? types of git reset?

002. How to delete the local branch & remote branch in git?

• Local branch:  git branch -D <bn>
• Remote branch: git push origin --delete <bn>

003. Difference between git diff and git status?

• git diff: 
• git status:

004. What are hooks in git?

• Hooks are special scripts
• it will be execute before or after a certain commands

005. What is the importance .git directory?

• branch
• config
• hooks
• info
• logs
• HEAD
• Objects

006. What are the branches, and differences between remote and local branches?

007. What Branching strategy that you are familiar with?

• Master (or) main
• Development
• Feature/01
• Feature/02
• Creata a PR
• qa
• dev
• pre-pord
• master-main
• tag

008. What is PR (Pull Request)? What's the importance of PR?

009. Which version of git you have used? 

• git version
• git version 2.17.1

011. What is git squash?

git merge --squash <bn>

012. Command to list all commits?

     git log

git log --oneline

Linux & Shell Script:

001. Command to find empty files in a given directory ?

    find . -empty

002. Commands you will use it for configuring ssh connectivity between 2 machines and what files                 will  be  present in .ssh folder ?

• First we need to private key & public key to connect
• ssh-keygen
• ~/.ssh
• id_rsa-------id_rsa.pub----know_hosts----authorised_key

003. How to schedule a shell script in unix machine?

Crontab

004. Command to get load average?

    top

005. Need to identify IP Address in log file and count IP addresses in log file ?

• git clone git@github.com:Sundupalli/Unix_and_shell-Deekshith.git  
• grep -E -o "([0-9]{1,3}[.]){3}[0-9]{1,3}" logfile | sort | uniq -c | sort -nr

006. What is command for checking the running process? how to get PID of process?

• ps
• ps -eaf

007. Command to get whether certain port is listing or not?

netstat -tunlap

008. How to identify the number of parameters that has been sent to shell script?

vi test.sh

sh test.sh

sh test.sh 3 4 6 

vi sh test.sh 3 4 6 7

echo "Hello world"

echo "The number of parameters $#"

ans:-  Hello world

The number of parameters 4

009. Command to delete empty line in a file?  

• sed '/^$/d' test.sh
• sed -i '/^$/d' test.sh

010. What is exit status?

echo $?

011. Given machine, how will you identify which machine it is?

uname -a